{"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1169():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1169():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_6347232b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1821(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1821(a: int, b: int) -> int:\n```", "sample_id": "python_medium_53477b9a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1290):\n```", "sample_id": "python_hard_a98a8bbd", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1232(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1232(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_0bf40afd", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1605():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1605():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_1784d46c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1135):\n```", "sample_id": "python_hard_3411b1f4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1160():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1160():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_c998de52", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v67):\n```", "sample_id": "python_medium_c2c1b0ab", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v479():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v479():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_5a318e7f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v989():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v989():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_0f935341", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v778):\n for j in range(n_v778):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v778):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_5628514a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v212():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v212():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_47bcb010", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v458):\n for j in range(n_v458):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v458):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_05f48d8b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1556():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1556():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_a30240d1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v281(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v281(first_number, second_number):\n```", "sample_id": "python_easy_893478b7", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1324(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1324(a: int, b: int) -> int:\n```", "sample_id": "python_medium_9462dd58", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v578):\n```", "sample_id": "python_hard_ceab2573", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1775():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1775():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_008151fa", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v721):\n for j in range(n_v721):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v721):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_dcb0b4f7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v316():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v316():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_acc7e18f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v154():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v154():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_39217436", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1731(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1731(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_70e53a62", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1184():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1184():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_f6c0b9d3", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v438():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v438():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_ecd6ab8c", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v4(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v4(first_number, second_number):\n```", "sample_id": "python_medium_f2b0fdb7", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v447():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v447():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_6c798098", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v265):\n for j in range(n_v265):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v265):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ffd8976c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v131):\n for j in range(n_v131):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v131):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_24e0e8f9", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1117():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1117():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_b50c596e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1901():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1901():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_0841692c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1997():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1997():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_a12b86b1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1985():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1985():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_398f1571", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1415):\n for j in range(n_v1415):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1415):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d3c6f38c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v838():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v838():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_8815af5e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v174):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v174):\n if condition:\n break\n```", "sample_id": "python_medium_ab4bd46c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1482():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1482():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_d5a82886", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v91():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v91():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_af7aec69", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1625():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1625():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_cf8b19ed", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1128):\n for j in range(n_v1128):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1128):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_9bc439d7", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v603(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v603(first_number, second_number):\n```", "sample_id": "python_medium_ce8f96c8", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v709):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v709):\n if condition:\n break\n```", "sample_id": "python_hard_c557e50a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1274():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1274():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_2c2778ff", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v446):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v446):\n if condition:\n break\n```", "sample_id": "python_hard_31f313e2", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v268():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v268():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_9f9a60aa", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v702(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v702(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_0ff98eb4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v229):\n for j in range(n_v229):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v229):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d2fbc506", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1506):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1506):\n if condition:\n break\n```", "sample_id": "python_medium_b70d79bc", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v984():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v984():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_b1857cd2", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v842(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v842(first_number, second_number):\n```", "sample_id": "python_hard_c9a2c7e8", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v460):\n```", "sample_id": "python_medium_9b665784", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v125():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v125():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_4aa43f7f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1849(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1849(first_number, second_number):\n```", "sample_id": "python_hard_570cc6d5", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v830):\n for j in range(n_v830):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v830):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_435f7fa1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1261):\n```", "sample_id": "python_medium_73e39705", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1886(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1886(a: int, b: int) -> int:\n```", "sample_id": "python_easy_d3153472", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v882):\n```", "sample_id": "python_hard_250add6a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1429(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1429(a: int, b: int) -> int:\n```", "sample_id": "python_medium_0acd6b58", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v228():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v228():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_7a8c0620", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1055):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1055):\n if condition:\n break\n```", "sample_id": "python_hard_a4911127", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v262(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v262(a: int, b: int) -> int:\n```", "sample_id": "python_easy_c6e24db8", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v299):\n```", "sample_id": "python_medium_5f0f099b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v864():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v864():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_552bef48", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1236(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1236(first_number, second_number):\n```", "sample_id": "python_hard_472f2d30", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1655():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1655():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_7d1cbcf3", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v28(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v28(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_8b6d9d34", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v233(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v233(a: int, b: int) -> int:\n```", "sample_id": "python_easy_74c01178", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v659(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v659(a: int, b: int) -> int:\n```", "sample_id": "python_easy_1f17700e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v940):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v940):\n if condition:\n break\n```", "sample_id": "python_hard_60c013cc", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v607(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v607(a: int, b: int) -> int:\n```", "sample_id": "python_medium_d90f1244", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1449():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1449():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_a43620ec", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1035():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1035():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_fca88c2d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1881(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1881(a: int, b: int) -> int:\n```", "sample_id": "python_medium_459d2e12", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v868():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v868():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_5070a21e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v702():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v702():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_2d566443", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1246():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1246():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_95a88a35", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1):\n for j in range(n_v1):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_b3b41895", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v917(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v917(first_number, second_number):\n```", "sample_id": "python_medium_3fcdf0ce", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v258():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v258():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_80c8416d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v229(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v229(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_1b7fc2f2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1636(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1636(a: int, b: int) -> int:\n```", "sample_id": "python_easy_87589d44", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1997(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1997(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_c2572dd1", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1206():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1206():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_7db4cdf7", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v3(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v3(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_3d84f61f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v990():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v990():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_e3895725", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v858(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v858(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_8d1c6962", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1783(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1783(a: int, b: int) -> int:\n```", "sample_id": "python_easy_b21ad19e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1836():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1836():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_99588255", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1341):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1341):\n if condition:\n break\n```", "sample_id": "python_medium_024339f8", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1749(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1749(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_c3d92c4b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1275():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1275():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_9c264d77", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v802():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v802():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_2793ca37", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1640():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1640():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_88c65239", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1194):\n for j in range(n_v1194):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1194):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_8a6a61c6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1468(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1468(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_bf8eef40", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1713():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1713():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_f4fb5b1a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1505):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1505):\n if condition:\n break\n```", "sample_id": "python_hard_afea3e5a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1033):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1033):\n if condition:\n break\n```", "sample_id": "python_medium_516df8f0", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1470):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1470):\n if condition:\n break\n```", "sample_id": "python_hard_b9e0c78e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1798():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1798():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_a54359d7", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1688):\n for j in range(n_v1688):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1688):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_9edb9228", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v956):\n for j in range(n_v956):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v956):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_35b37618", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1499(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1499(first_number, second_number):\n```", "sample_id": "python_hard_b0a89f34", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v266():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v266():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_a0f61e19", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v557(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v557(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_65cb034c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v210():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v210():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_e309d2ca", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v32():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v32():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_f0edd5a0", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1405():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1405():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_da41cbfb", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v945(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v945(first_number, second_number):\n```", "sample_id": "python_medium_28fd93a6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v376():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v376():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_826719cf", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1521():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1521():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_e3b3e6a2", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_b277e062", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v73():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v73():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_21d98f49", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v25(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v25(a: int, b: int) -> int:\n```", "sample_id": "python_easy_04af8e6c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1281():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1281():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_c969c53c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v684():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v684():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_937b46f3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1248(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1248(a: int, b: int) -> int:\n```", "sample_id": "python_medium_e86d4331", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1775):\n for j in range(n_v1775):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1775):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_f69cb6fe", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1153):\n for j in range(n_v1153):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1153):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_4099e82d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1095():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1095():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_32659be9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1609():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1609():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_c41930f6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v248(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v248(a: int, b: int) -> int:\n```", "sample_id": "python_easy_73edea1d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1867):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1867):\n if condition:\n break\n```", "sample_id": "python_medium_45b2720e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1417(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1417(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_92d847a7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1472):\n for j in range(n_v1472):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1472):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ba8ed067", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v265():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v265():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_c54ef2a9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v435):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v435):\n if condition:\n break\n```", "sample_id": "python_hard_99f1976b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v639():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v639():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_03b2c52d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v731():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v731():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_faafaaf6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v343):\n for j in range(n_v343):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v343):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_3c083ea9", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1168(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1168(a: int, b: int) -> int:\n```", "sample_id": "python_hard_1479ffb2", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1883():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1883():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_eaa673b1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v342):\n for j in range(n_v342):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v342):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_96e32171", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1787():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1787():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_3e87d79b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v961(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v961(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_0189cf9b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v305(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v305(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_3458229e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v483():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v483():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_769f2fc1", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v547():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v547():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_97618aa1", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1200():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1200():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_42dcdfb4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1680(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1680(a: int, b: int) -> int:\n```", "sample_id": "python_hard_19585e57", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1188):\n for j in range(n_v1188):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1188):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_ef63ebd4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v900):\n for j in range(n_v900):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v900):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_3ea95954", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v556):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v556):\n if condition:\n break\n```", "sample_id": "python_hard_357bb9ad", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v587():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v587():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_cf2b03e5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v631):\n for j in range(n_v631):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v631):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_c4f8a701", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v144(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v144(first_number, second_number):\n```", "sample_id": "python_easy_707b7665", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v270):\n for j in range(n_v270):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v270):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_738afc6f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v347):\n```", "sample_id": "python_hard_20ec0f4c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1717(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1717(a: int, b: int) -> int:\n```", "sample_id": "python_easy_d69b04ff", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v632():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v632():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_e3b2010f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1733(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1733(first_number, second_number):\n```", "sample_id": "python_medium_f05c76cb", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1537():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1537():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_ca339673", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v333(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v333(first_number, second_number):\n```", "sample_id": "python_easy_8f831874", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v53):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v53):\n if condition:\n break\n```", "sample_id": "python_hard_783d8bf0", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v585):\n for j in range(n_v585):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v585):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_92e8b53f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1344():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1344():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_6c760caf", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v15):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v15):\n if condition:\n break\n```", "sample_id": "python_medium_c1adb9e3", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v34():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v34():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_614964ce", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v880(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v880(a: int, b: int) -> int:\n```", "sample_id": "python_hard_b8f6d1ad", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v613():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v613():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_2ad42053", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v186):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v186):\n if condition:\n break\n```", "sample_id": "python_hard_474390e4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_9cfea75d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v243):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v243):\n if condition:\n break\n```", "sample_id": "python_hard_30d9e7b5", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1965):\n for j in range(n_v1965):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1965):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_8ae1cac8", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v338(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v338(a: int, b: int) -> int:\n```", "sample_id": "python_medium_fe5142b7", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v458():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v458():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_388cc34a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1576():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1576():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_e9d11e53", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v695():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v695():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_5e581ceb", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v488(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v488(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_aff264fc", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1274):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1274):\n if condition:\n break\n```", "sample_id": "python_medium_2eda6c3e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1327(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1327(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_66c3c178", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v455():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v455():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_05f62f89", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v119():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v119():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_381da82c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v992):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v992):\n if condition:\n break\n```", "sample_id": "python_medium_978b03e1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v286():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v286():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_cef47de2", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1882():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1882():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_cc6eaa9f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1519):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1519):\n if condition:\n break\n```", "sample_id": "python_hard_735e8670", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v794():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v794():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_4b8f9a60", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v366():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v366():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_139e1ece", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v798):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v798):\n if condition:\n break\n```", "sample_id": "python_medium_aa0680b6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v541):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v541):\n if condition:\n break\n```", "sample_id": "python_medium_e0858745", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1494():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1494():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_6e892000", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1545(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1545(a: int, b: int) -> int:\n```", "sample_id": "python_easy_1009cd6a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1272(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1272(a: int, b: int) -> int:\n```", "sample_id": "python_medium_adcb7e91", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1945(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1945(a: int, b: int) -> int:\n```", "sample_id": "python_medium_133e11ec", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1549(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1549(a: int, b: int) -> int:\n```", "sample_id": "python_medium_45a3aaf8", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1957():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1957():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_b537d225", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v625(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v625(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_5f7a6a34", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v622():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v622():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_0ecfc558", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v378(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v378(first_number, second_number):\n```", "sample_id": "python_medium_f225eea5", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v917):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v917):\n if condition:\n break\n```", "sample_id": "python_hard_2b46f481", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v679():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v679():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_1265affd", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1464):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1464):\n if condition:\n break\n```", "sample_id": "python_medium_c016e6d1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v215(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v215(a: int, b: int) -> int:\n```", "sample_id": "python_easy_dcaf5914", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v442():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v442():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_fc1f6e22", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v989):\n```", "sample_id": "python_hard_f81a4b63", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v871):\n```", "sample_id": "python_medium_3c15ed88", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v211(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v211(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_77c9c31e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1425):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1425):\n if condition:\n break\n```", "sample_id": "python_hard_7a7ed660", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v548():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v548():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_d8084635", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1753(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1753(first_number, second_number):\n```", "sample_id": "python_hard_44ce1f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v539):\n```", "sample_id": "python_medium_9dab1d1e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1502():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1502():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_bc2e1f59", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v396():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v396():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_2eb9a153", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1434):\n```", "sample_id": "python_hard_5c9915b8", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1675):\n for j in range(n_v1675):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1675):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_f901cc4f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1643():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1643():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_8dea252c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v871():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v871():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_d8bb3b94", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v455():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v455():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_ac4aa79b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v64():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v64():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a8a31dee", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1015():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1015():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_adc2de54", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1870(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1870(a: int, b: int) -> int:\n```", "sample_id": "python_easy_1b4bb495", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1538(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1538(a: int, b: int) -> int:\n```", "sample_id": "python_medium_94e3e779", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v285(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v285(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_c725ac30", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v588():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v588():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_fbb4c2f8", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v823():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v823():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_b59828c9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v369):\n```", "sample_id": "python_hard_8a96f77c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v725():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v725():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_31c59b1c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1787):\n```", "sample_id": "python_hard_270af7ad", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v682(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v682(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_e08123ca", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1998(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1998(first_number, second_number):\n```", "sample_id": "python_medium_b7f4510f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1603):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1603):\n if condition:\n break\n```", "sample_id": "python_hard_28805a8c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1268(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1268(first_number, second_number):\n```", "sample_id": "python_medium_af09dded", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v978():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v978():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_425f6eac", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1734():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1734():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_a88a1a8f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1245):\n```", "sample_id": "python_medium_31a92433", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v445():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v445():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_994a9996", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1595():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1595():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_78f10e91", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v750():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v750():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_2dcacc73", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1783):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1783):\n if condition:\n break\n```", "sample_id": "python_hard_f0ed8d18", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v972():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v972():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_80800292", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1691():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1691():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_73d1727b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1757):\n for j in range(n_v1757):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1757):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_37cf47e5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v255(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v255(a: int, b: int) -> int:\n```", "sample_id": "python_easy_d689432a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1898():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1898():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_7b12a980", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v40(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v40(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d15e50e7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v412):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v412):\n if condition:\n break\n```", "sample_id": "python_hard_cecf9b0c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1730():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1730():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_9aecdb0f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1123):\n for j in range(n_v1123):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1123):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_47520cea", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v352(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v352(first_number, second_number):\n```", "sample_id": "python_medium_6a15f3f2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v32):\n for j in range(n_v32):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v32):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_18d0617c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1332):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1332):\n if condition:\n break\n```", "sample_id": "python_medium_beefa567", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1874):\n for j in range(n_v1874):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1874):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_202dfaa5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1440():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1440():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_798257be", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v38(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v38(first_number, second_number):\n```", "sample_id": "python_hard_372195a6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v50):\n for j in range(n_v50):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v50):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e13d0386", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1001(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1001(first_number, second_number):\n```", "sample_id": "python_medium_53a56195", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v288():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v288():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_c943a614", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v534():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v534():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_77b29520", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1170():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1170():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_2ae48582", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1047():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1047():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_61f59ea1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1235(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1235(a: int, b: int) -> int:\n```", "sample_id": "python_hard_01f7e50b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1094():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1094():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_e9ffd737", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v768(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v768(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_80559543", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1555(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1555(a: int, b: int) -> int:\n```", "sample_id": "python_hard_00194248", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1093):\n for j in range(n_v1093):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1093):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_719048a9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v697():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v697():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_9ed82577", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1569):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1569):\n if condition:\n break\n```", "sample_id": "python_medium_d94e7c7c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1826():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1826():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_e8f5cca4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1456():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1456():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_14046b79", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v861():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v861():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_5fd69d25", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v870():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v870():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_46cee9c9", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v240(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v240(first_number, second_number):\n```", "sample_id": "python_easy_e3037122", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1698):\n for j in range(n_v1698):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1698):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_c3f161d8", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1576):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1576):\n if condition:\n break\n```", "sample_id": "python_hard_576c6290", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1339(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1339(first_number, second_number):\n```", "sample_id": "python_medium_72557abe", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1277):\n for j in range(n_v1277):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1277):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_2055c271", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1905(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1905(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_0fb1217e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1216(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1216(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_5b374527", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v97(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v97(first_number, second_number):\n```", "sample_id": "python_easy_a3ee3ff3", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1580):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1580):\n if condition:\n break\n```", "sample_id": "python_medium_dccd154c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1980(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1980(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_37f21149", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v223):\n```", "sample_id": "python_hard_ea7d7a60", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1214):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1214):\n if condition:\n break\n```", "sample_id": "python_medium_1f5b8ee1", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v384():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v384():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_1a5262d6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1740):\n```", "sample_id": "python_hard_239a4ab4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v239():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v239():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_3a8438fd", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1592():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1592():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_8f7e66de", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v592):\n```", "sample_id": "python_medium_2d011b75", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v642():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v642():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_15024662", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v987():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v987():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_b53d4dbf", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v558(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v558(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_1faefead", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1014(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1014(a: int, b: int) -> int:\n```", "sample_id": "python_medium_b0d2e663", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v11():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v11():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_158fbde1", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v154):\n```", "sample_id": "python_medium_3b55a6dd", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v283():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v283():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_869d10bc", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v900():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v900():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_f93534a3", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v434():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v434():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_7bdd11fb", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v620):\n```", "sample_id": "python_hard_a18e8d27", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1625):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1625):\n if condition:\n break\n```", "sample_id": "python_hard_f58208da", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v288(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v288(first_number, second_number):\n```", "sample_id": "python_hard_655b0150", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1085):\n```", "sample_id": "python_medium_51414fd9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v824():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v824():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_823fd344", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v139):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v139):\n if condition:\n break\n```", "sample_id": "python_hard_e88c8a47", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1818(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1818(first_number, second_number):\n```", "sample_id": "python_hard_7af443de", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v360):\n```", "sample_id": "python_hard_eaf2f913", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v19():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v19():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_30ca5801", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v171():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v171():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a795dab3", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1430):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1430):\n if condition:\n break\n```", "sample_id": "python_hard_388df524", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v653):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v653):\n if condition:\n break\n```", "sample_id": "python_medium_d48b4a5f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1513(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1513(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_ed321324", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1380():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1380():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_1ba7509e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1902():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1902():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_3ba12a83", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v716():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v716():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_ae0fcf36", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v988):\n```", "sample_id": "python_hard_31d05fa7", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1240():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1240():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_0bf75eee", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1774):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1774):\n if condition:\n break\n```", "sample_id": "python_hard_529e3ee3", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1795(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1795(a: int, b: int) -> int:\n```", "sample_id": "python_medium_fea33259", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1353():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1353():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_697440d7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1087(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1087(first_number, second_number):\n```", "sample_id": "python_easy_f1eb659b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v757():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v757():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_d7ead0ca", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v809():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v809():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_f9b2dca8", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v640():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v640():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_c7b24adf", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1510():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1510():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_a56cb301", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v810(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v810(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f1205e86", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1273():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1273():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_5d421b0b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1372():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1372():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_e6d9ced4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1397():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1397():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_1311344b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1710):\n for j in range(n_v1710):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1710):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_3b76b68d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v658):\n for j in range(n_v658):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v658):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_6bc6ef3b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v212(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v212(first_number, second_number):\n```", "sample_id": "python_medium_4e1de61c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1122):\n for j in range(n_v1122):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1122):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_425697c9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1991):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1991):\n if condition:\n break\n```", "sample_id": "python_medium_bf6d8c09", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v798(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v798(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_e290d9fe", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v538):\n for j in range(n_v538):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v538):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_7dffcad6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v535():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v535():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_f0bb168c", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v998(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v998(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_69414a33", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v464():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v464():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_cb900391", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1623):\n```", "sample_id": "python_medium_2490b714", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1328():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1328():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_b910b5a0", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v853(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v853(a: int, b: int) -> int:\n```", "sample_id": "python_hard_50e902bb", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1775(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1775(first_number, second_number):\n```", "sample_id": "python_hard_9aa6ae3d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1848):\n for j in range(n_v1848):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1848):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_83f86baf", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v900(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v900(a: int, b: int) -> int:\n```", "sample_id": "python_easy_f5bb4c99", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1279(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1279(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_1ae54e5d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v379(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v379(a: int, b: int) -> int:\n```", "sample_id": "python_hard_ffc46f13", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v654():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v654():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_8de4918c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v668):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v668):\n if condition:\n break\n```", "sample_id": "python_medium_3b926953", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v5():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v5():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_ae9119d1", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v669):\n for j in range(n_v669):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v669):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_396bbb8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1271():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1271():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_764f2122", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1666):\n```", "sample_id": "python_hard_7a5bf10e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v426(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v426(a: int, b: int) -> int:\n```", "sample_id": "python_medium_53b8df72", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1561(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1561(a: int, b: int) -> int:\n```", "sample_id": "python_medium_e03b0caa", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v348):\n```", "sample_id": "python_hard_4d18f7a1", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1533():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1533():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_86b300f1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1704):\n```", "sample_id": "python_medium_4a57b8b0", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v834):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v834):\n if condition:\n break\n```", "sample_id": "python_medium_7f230b4e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1280(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1280(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_635587ff", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v196(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v196(a: int, b: int) -> int:\n```", "sample_id": "python_medium_ce5fd496", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v728():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v728():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_9af65628", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1262(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1262(a: int, b: int) -> int:\n```", "sample_id": "python_hard_13daa7bd", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1131(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1131(a: int, b: int) -> int:\n```", "sample_id": "python_hard_fd2786dc", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v630():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v630():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_29569d87", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1492):\n```", "sample_id": "python_hard_4f8462bf", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1013():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1013():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_0841c13a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v827(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v827(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_5a97ac90", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1848(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1848(first_number, second_number):\n```", "sample_id": "python_medium_4844942a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v381(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v381(first_number, second_number):\n```", "sample_id": "python_medium_86aba48c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1714):\n for j in range(n_v1714):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1714):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_8f112bdb", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v317(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v317(a: int, b: int) -> int:\n```", "sample_id": "python_medium_9d9f6d0d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1520(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1520(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d300795a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v158():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v158():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_35c32fae", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v380(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v380(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_2ed6ce03", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v100):\n```", "sample_id": "python_medium_9cb0275e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1657):\n for j in range(n_v1657):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1657):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_073291c0", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v430(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v430(a: int, b: int) -> int:\n```", "sample_id": "python_easy_a05b7001", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v570():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v570():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_246b451f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v639):\n for j in range(n_v639):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v639):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ee7e7348", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v600):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v600):\n if condition:\n break\n```", "sample_id": "python_medium_fd742491", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v172():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v172():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_54453d6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v303(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v303(first_number, second_number):\n```", "sample_id": "python_hard_445da9b1", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1100():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1100():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_c0f3be29", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v491(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v491(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_ad6db87a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1520):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1520):\n if condition:\n break\n```", "sample_id": "python_medium_ca778591", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v192():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v192():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_1c5fa424", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1653():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1653():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_8d2e2a09", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v309(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v309(a: int, b: int) -> int:\n```", "sample_id": "python_medium_6f66d42a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v855):\n for j in range(n_v855):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v855):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_58d88f79", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v607():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v607():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_5f345a1e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1291():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1291():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_1b4d5166", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1942):\n for j in range(n_v1942):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1942):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_f6ec5009", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1548():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1548():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_6d917759", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1959):\n```", "sample_id": "python_hard_46208fca", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v990):\n```", "sample_id": "python_medium_2a7a02e5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1393(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1393(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_62ddf8c3", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v340(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v340(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_817e49ba", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1081():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1081():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_a5d621da", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v208(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v208(a: int, b: int) -> int:\n```", "sample_id": "python_hard_71b3190d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1568(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1568(a: int, b: int) -> int:\n```", "sample_id": "python_easy_14b1d7d1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1921():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1921():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_a5d04682", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1153(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1153(first_number, second_number):\n```", "sample_id": "python_medium_b1a5877c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1703():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1703():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_c03f2828", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1790(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1790(first_number, second_number):\n```", "sample_id": "python_easy_9cc3a0e1", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1759(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1759(a: int, b: int) -> int:\n```", "sample_id": "python_medium_9d3e034c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v554):\n for j in range(n_v554):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v554):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_0d5bf96f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v883(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v883(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_b944ad7a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1767(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1767(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_1f8494cb", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1018):\n```", "sample_id": "python_hard_3010ec37", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v524():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v524():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5c1da43c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1280):\n```", "sample_id": "python_hard_03125e9e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v644):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v644):\n if condition:\n break\n```", "sample_id": "python_hard_86ef1784", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1804(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1804(first_number, second_number):\n```", "sample_id": "python_medium_797296b0", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1179(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1179(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_2dec3207", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v344):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v344):\n if condition:\n break\n```", "sample_id": "python_medium_f89614df", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1595(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1595(a: int, b: int) -> int:\n```", "sample_id": "python_easy_e41ea852", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v92():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v92():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_a8f187c4", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1795):\n```", "sample_id": "python_hard_60a9f20c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v85():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v85():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_a4dab1d5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1314():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1314():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_caeb3c12", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v114):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v114):\n if condition:\n break\n```", "sample_id": "python_hard_eefeb4a4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v290():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v290():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_dc79c9cf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1984):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1984):\n if condition:\n break\n```", "sample_id": "python_hard_61773f9d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1107(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1107(first_number, second_number):\n```", "sample_id": "python_easy_8d87b6b4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1711(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1711(first_number, second_number):\n```", "sample_id": "python_medium_9c4daddb", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v785(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v785(a: int, b: int) -> int:\n```", "sample_id": "python_hard_5306501b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1686():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1686():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_7eaa4ebd", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1342():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1342():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_30068476", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v474():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v474():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_a7342e18", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1764(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1764(a: int, b: int) -> int:\n```", "sample_id": "python_medium_eefb9685", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1206):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1206):\n if condition:\n break\n```", "sample_id": "python_hard_6062028c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1068):\n for j in range(n_v1068):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1068):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_028120f9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1222():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1222():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_f5f2caa0", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v609):\n```", "sample_id": "python_medium_36c6fa75", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v755(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v755(a: int, b: int) -> int:\n```", "sample_id": "python_medium_076cc6ac", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v413(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v413(first_number, second_number):\n```", "sample_id": "python_medium_37868dbf", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v344():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v344():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_67af4c2b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v99(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v99(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_f8fdd8b8", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1963):\n for j in range(n_v1963):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1963):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_2529b340", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1228):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1228):\n if condition:\n break\n```", "sample_id": "python_hard_f3edfcad", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1880):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1880):\n if condition:\n break\n```", "sample_id": "python_medium_ab17f2a2", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v157(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v157(first_number, second_number):\n```", "sample_id": "python_medium_ed3ee994", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1151(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1151(first_number, second_number):\n```", "sample_id": "python_medium_90c40339", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v668(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v668(a: int, b: int) -> int:\n```", "sample_id": "python_easy_4807a927", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1722):\n```", "sample_id": "python_hard_9f2ac7f9", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1834(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1834(first_number, second_number):\n```", "sample_id": "python_hard_62b214a8", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1395(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1395(a: int, b: int) -> int:\n```", "sample_id": "python_hard_05986ff4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1621):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1621):\n if condition:\n break\n```", "sample_id": "python_medium_2eeb7e04", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v647():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v647():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_a3d1b4e6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1114(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1114(first_number, second_number):\n```", "sample_id": "python_hard_0a5b9e36", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v402():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v402():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_3f665314", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v947):\n for j in range(n_v947):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v947):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_56cda69f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v856(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v856(first_number, second_number):\n```", "sample_id": "python_hard_e6846218", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1396(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1396(first_number, second_number):\n```", "sample_id": "python_easy_d12fc24c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1678():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1678():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_2738cf8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1008(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1008(a: int, b: int) -> int:\n```", "sample_id": "python_hard_0c63aca9", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v438):\n```", "sample_id": "python_hard_e6bed241", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v168):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v168):\n if condition:\n break\n```", "sample_id": "python_medium_09a04968", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v539(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v539(first_number, second_number):\n```", "sample_id": "python_easy_925d6130", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1241(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1241(first_number, second_number):\n```", "sample_id": "python_medium_04b48c3e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1628():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1628():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_74dd81dc", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v745(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v745(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_6f4b2397", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v471(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v471(a: int, b: int) -> int:\n```", "sample_id": "python_easy_c8800c74", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1820(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1820(a: int, b: int) -> int:\n```", "sample_id": "python_hard_0ac867ce", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1636):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1636):\n if condition:\n break\n```", "sample_id": "python_hard_7ea4256a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v19(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v19(first_number, second_number):\n```", "sample_id": "python_medium_1a9332f0", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v377():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v377():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_542f7df8", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1383(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1383(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_fc342e1f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1049(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1049(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_bd835870", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1032):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1032):\n if condition:\n break\n```", "sample_id": "python_hard_f3cbecae", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1065():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1065():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_21316ea0", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v612():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v612():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_5c6653af", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1195):\n```", "sample_id": "python_medium_2cc0d173", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v57():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v57():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_813393af", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v600(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v600(a: int, b: int) -> int:\n```", "sample_id": "python_easy_be469c62", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1284(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1284(first_number, second_number):\n```", "sample_id": "python_hard_1304d44d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v790():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v790():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_225b44d4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v79(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v79(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_2894e4be", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1245():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1245():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_d409eb2e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v589):\n```", "sample_id": "python_medium_735619e7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v420):\n for j in range(n_v420):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v420):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_9854ba85", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1300):\n```", "sample_id": "python_medium_cb435701", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1850(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1850(first_number, second_number):\n```", "sample_id": "python_medium_a19027b9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1027():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1027():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_de2a7fea", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v205):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v205):\n if condition:\n break\n```", "sample_id": "python_hard_2dad70f1", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1383):\n for j in range(n_v1383):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1383):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_f9a67232", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1972():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1972():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_1fd3b2b6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v418():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v418():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_8c9d9021", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v126):\n for j in range(n_v126):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v126):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_4d176db3", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1955):\n for j in range(n_v1955):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1955):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_5b56bbe8", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1582(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1582(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_ad352156", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1953(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1953(a: int, b: int) -> int:\n```", "sample_id": "python_medium_edae5fff", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1367):\n```", "sample_id": "python_hard_33948ba7", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v905):\n for j in range(n_v905):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v905):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_044fb41a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1391():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1391():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_80f2c084", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1907(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1907(first_number, second_number):\n```", "sample_id": "python_hard_b4f4b020", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v439):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v439):\n if condition:\n break\n```", "sample_id": "python_hard_4cd74a0c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1158():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1158():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_4bdea26b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v966():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v966():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_05d02b98", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v693():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v693():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_c64a230b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1278(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1278(a: int, b: int) -> int:\n```", "sample_id": "python_medium_a275619b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v437(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v437(first_number, second_number):\n```", "sample_id": "python_easy_97c4efde", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v142):\n```", "sample_id": "python_medium_e5a5486b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v593():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v593():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_2fbb53ce", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v760(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v760(a: int, b: int) -> int:\n```", "sample_id": "python_hard_cf5d0e6e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1266():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1266():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_fa39dda9", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v931(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v931(a: int, b: int) -> int:\n```", "sample_id": "python_easy_2d351fc7", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v492(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v492(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_48f80f3a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v742(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v742(first_number, second_number):\n```", "sample_id": "python_medium_3b3d172c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1339):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1339):\n if condition:\n break\n```", "sample_id": "python_medium_14a3a080", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1296(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1296(first_number, second_number):\n```", "sample_id": "python_medium_64d428da", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1322():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1322():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_0f63d3e7", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v86(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v86(first_number, second_number):\n```", "sample_id": "python_medium_f5b71364", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v173):\n```", "sample_id": "python_hard_49961f6e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1411():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1411():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_dcebe3fd", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1405():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1405():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_bfa3eb93", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1841):\n for j in range(n_v1841):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1841):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_605f2f2c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v245(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v245(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_d755e9e5", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v327):\n```", "sample_id": "python_hard_8eaf2928", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v583():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v583():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_76780ac9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1639):\n```", "sample_id": "python_hard_58556b73", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1711():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1711():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_81ee3a3a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v766(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v766(first_number, second_number):\n```", "sample_id": "python_easy_cc88e10b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1687):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1687):\n if condition:\n break\n```", "sample_id": "python_medium_2adc52d4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1185():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1185():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_9a30923b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1126):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1126):\n if condition:\n break\n```", "sample_id": "python_medium_acb6ec86", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1609():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1609():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_a36085b8", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1530(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1530(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_a7aff8cc", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1173():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1173():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_6ed7eeff", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1828(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1828(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_49c9534d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1208):\n```", "sample_id": "python_hard_05a2bc9a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1526):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1526):\n if condition:\n break\n```", "sample_id": "python_hard_2d94f07d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v239(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v239(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_6b62bd3d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1266):\n for j in range(n_v1266):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1266):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e1243cea", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v954(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v954(a: int, b: int) -> int:\n```", "sample_id": "python_hard_d101c06c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1086():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1086():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5065ab8f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v472(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v472(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_6fcc7008", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v581):\n```", "sample_id": "python_medium_a331fc1d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1535):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1535):\n if condition:\n break\n```", "sample_id": "python_medium_0ff2cebe", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v216():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v216():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_86965fd0", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1215(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1215(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_594a15cc", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1676(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1676(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_830f5c6e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v301):\n```", "sample_id": "python_hard_eeae7043", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1934(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1934(a: int, b: int) -> int:\n```", "sample_id": "python_medium_b739f7f3", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1233):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1233):\n if condition:\n break\n```", "sample_id": "python_hard_39c9019e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1912():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1912():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_a2cac7a8", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1070():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1070():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_d7018680", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v713):\n```", "sample_id": "python_hard_61cb452d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1287):\n for j in range(n_v1287):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1287):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_dce0d10c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1249(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1249(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d7572369", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v221():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v221():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_a4bc766e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v298():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v298():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_5892a846", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v162():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v162():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_b52e81d6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1854(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1854(first_number, second_number):\n```", "sample_id": "python_easy_8c667fdd", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1503):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1503):\n if condition:\n break\n```", "sample_id": "python_hard_fa6d5a49", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v243():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v243():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_1259f9cd", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1601():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1601():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_ee9eaf0c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1452():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1452():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_5ead816e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v804(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v804(first_number, second_number):\n```", "sample_id": "python_hard_4130a1e0", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1215):\n```", "sample_id": "python_medium_29bc20b9", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v468():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v468():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_dd9f6922", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v687():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v687():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_a141d364", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1804):\n for j in range(n_v1804):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1804):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_a1aaeb6f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1831():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1831():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_55033163", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v268):\n```", "sample_id": "python_hard_1c8855d7", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1416):\n for j in range(n_v1416):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1416):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_eb61932f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1188():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1188():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_33323668", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1718():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1718():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_90dea5a8", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v553(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v553(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_fe376731", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1830(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1830(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_125eed88", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v592(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v592(a: int, b: int) -> int:\n```", "sample_id": "python_easy_479edeb1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1406():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1406():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_9901ffc4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1438():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1438():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_ccc8ff08", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v831(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v831(a: int, b: int) -> int:\n```", "sample_id": "python_easy_cf207071", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v120(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v120(a: int, b: int) -> int:\n```", "sample_id": "python_hard_b9463b6e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v955):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v955):\n if condition:\n break\n```", "sample_id": "python_medium_c5963fbe", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1822():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1822():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_98fdfd3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1606(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1606(first_number, second_number):\n```", "sample_id": "python_medium_d5e838f2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v368):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v368):\n if condition:\n break\n```", "sample_id": "python_hard_0d219c59", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v397():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v397():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_f29ae80f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v772(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v772(a: int, b: int) -> int:\n```", "sample_id": "python_hard_08d88ad2", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v148():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v148():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_17feebe4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v314():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v314():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_6761bca0", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1399():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1399():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_e03b94d8", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v466):\n for j in range(n_v466):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v466):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_fed30c40", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v282():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v282():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_ee39a830", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1981):\n for j in range(n_v1981):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1981):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_81d535ff", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v552):\n for j in range(n_v552):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v552):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_f9564abe", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v27(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v27(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_3cf537fc", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1461():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1461():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_3e017535", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1805():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1805():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_ed6c0254", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1371(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1371(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_60b60e79", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v161(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v161(first_number, second_number):\n```", "sample_id": "python_medium_0cab6654", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1646(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1646(a: int, b: int) -> int:\n```", "sample_id": "python_medium_cd23b205", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v480():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v480():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_41f3f500", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1299(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1299(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_e8e5ee81", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v545):\n```", "sample_id": "python_medium_3a159bab", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1940():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1940():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_31a838ca", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1742():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1742():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_3fa31fab", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1105():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1105():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_18a4ab43", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1250):\n```", "sample_id": "python_hard_41af8ff0", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1677():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1677():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_64566e67", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v125():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v125():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_4fd1c61c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v179():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v179():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_e6607961", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1235):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1235):\n if condition:\n break\n```", "sample_id": "python_hard_8a1082af", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v81():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v81():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_79c71a2d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v51):\n```", "sample_id": "python_medium_b87ec448", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v889(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v889(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_994ce5e4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1718(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1718(a: int, b: int) -> int:\n```", "sample_id": "python_easy_f1b3e07f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1408():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1408():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_1dabea6a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1243(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1243(a: int, b: int) -> int:\n```", "sample_id": "python_hard_c80627fc", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v729(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v729(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_85d01b42", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v663():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v663():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_5ffd8fa9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v784():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v784():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_19d6fd21", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1710(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1710(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_87e0f41f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v771(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v771(a: int, b: int) -> int:\n```", "sample_id": "python_easy_fb5fe27c", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1225():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1225():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_a2b23c74", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1695():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1695():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_3866bac9", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v834(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v834(a: int, b: int) -> int:\n```", "sample_id": "python_easy_56f56797", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1737():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1737():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_545939b7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v337):\n for j in range(n_v337):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v337):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_a3e8bd68", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v843():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v843():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_53a04b9e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v196):\n for j in range(n_v196):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v196):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_902b50f4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v727(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v727(first_number, second_number):\n```", "sample_id": "python_easy_da2622ca", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v781):\n```", "sample_id": "python_hard_50c7a43e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1186):\n for j in range(n_v1186):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1186):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_fe4e75c2", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1816(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1816(first_number, second_number):\n```", "sample_id": "python_medium_6a6dad12", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1944):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1944):\n if condition:\n break\n```", "sample_id": "python_hard_b24c971a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1829():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1829():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_ad52f552", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v958():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v958():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_8cbed0e8", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v242):\n for j in range(n_v242):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v242):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_3ed0ab58", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v964():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v964():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_c1668dff", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1442():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1442():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_cb342c4b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v121):\n```", "sample_id": "python_medium_1558eb62", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1193):\n```", "sample_id": "python_medium_b1334449", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v780():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v780():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_1f438107", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1979():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1979():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_e34eb494", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1855():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1855():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_cc528c13", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1652():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1652():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_cbb2aa90", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v323):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v323):\n if condition:\n break\n```", "sample_id": "python_hard_27fcad1a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v213():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v213():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_a4b146cc", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v705():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v705():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_e8d30e6f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1430(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1430(first_number, second_number):\n```", "sample_id": "python_medium_5e0552b7", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1129):\n for j in range(n_v1129):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1129):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_f9fe2f7d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1260():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1260():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_6025c21c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1931(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1931(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_7be904dc", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1318(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1318(a: int, b: int) -> int:\n```", "sample_id": "python_hard_7a546489", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1860():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1860():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_e18ef92c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v206():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v206():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_9880b802", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1590():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1590():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_b689e5c2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v437):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v437):\n if condition:\n break\n```", "sample_id": "python_medium_80376031", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v703(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v703(first_number, second_number):\n```", "sample_id": "python_medium_083e7eb1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1256):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1256):\n if condition:\n break\n```", "sample_id": "python_hard_ac707295", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1927):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1927):\n if condition:\n break\n```", "sample_id": "python_medium_c46ea1e1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1343(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1343(first_number, second_number):\n```", "sample_id": "python_hard_c24378cd", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v747():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v747():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_9ee8980a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v197():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v197():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_60f277d2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1531):\n for j in range(n_v1531):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1531):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_6cfe200a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v498():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v498():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_70b5ddc1", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1007):\n```", "sample_id": "python_hard_7e41c26e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1843():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1843():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_bd77591d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v195(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v195(a: int, b: int) -> int:\n```", "sample_id": "python_hard_f8834327", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1939(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1939(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_7d86d56f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v375):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v375):\n if condition:\n break\n```", "sample_id": "python_hard_dbe72a44", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1498():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1498():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_c689d277", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1712(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1712(a: int, b: int) -> int:\n```", "sample_id": "python_easy_51eb0439", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v770(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v770(a: int, b: int) -> int:\n```", "sample_id": "python_hard_bcc04a15", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v951(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v951(a: int, b: int) -> int:\n```", "sample_id": "python_easy_7d47d393", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v284):\n for j in range(n_v284):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v284):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_698ba501", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v796(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v796(a: int, b: int) -> int:\n```", "sample_id": "python_hard_c1dadf72", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v970(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v970(a: int, b: int) -> int:\n```", "sample_id": "python_hard_e5e29b83", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1317(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1317(first_number, second_number):\n```", "sample_id": "python_easy_c00e7cc4", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v423):\n for j in range(n_v423):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v423):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e17021fe", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1577():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1577():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_e5f7aaf2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v773):\n for j in range(n_v773):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v773):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_acdf6fb3", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v263(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v263(first_number, second_number):\n```", "sample_id": "python_medium_196e7554", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1848():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1848():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_e1f4cc32", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v985():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v985():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_521bf65f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1540(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1540(a: int, b: int) -> int:\n```", "sample_id": "python_easy_af511976", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1960):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1960):\n if condition:\n break\n```", "sample_id": "python_hard_dae33b96", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v298(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v298(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_11a0fe68", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1109():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1109():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_b436dc5d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1966):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1966):\n if condition:\n break\n```", "sample_id": "python_hard_e3300b6e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1348():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1348():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_338c2dd3", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1849():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1849():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_676dd67f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v801(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v801(a: int, b: int) -> int:\n```", "sample_id": "python_hard_350da785", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1070):\n for j in range(n_v1070):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1070):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_1b529b8c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v769():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v769():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_a229f6ca", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v976):\n for j in range(n_v976):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v976):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_036badec", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1404():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1404():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_a029fd37", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v719):\n for j in range(n_v719):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v719):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_4d979923", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1510(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1510(a: int, b: int) -> int:\n```", "sample_id": "python_easy_15ffd73e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v312():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v312():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_d1736269", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1063(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1063(a: int, b: int) -> int:\n```", "sample_id": "python_hard_75e98e0e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1655):\n for j in range(n_v1655):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1655):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_c23bdd1a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v145(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v145(a: int, b: int) -> int:\n```", "sample_id": "python_hard_44521ad6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1437():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1437():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_69acc223", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1115(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1115(a: int, b: int) -> int:\n```", "sample_id": "python_hard_cefbe4f2", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1631(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1631(first_number, second_number):\n```", "sample_id": "python_easy_b74f7bd3", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v200):\n for j in range(n_v200):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v200):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_78c410fe", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1216():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1216():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_c93f1869", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1325):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1325):\n if condition:\n break\n```", "sample_id": "python_hard_894d0f3b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v720():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v720():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_a4082a98", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1637):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1637):\n if condition:\n break\n```", "sample_id": "python_hard_836561a0", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1521):\n```", "sample_id": "python_medium_723a2d45", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1072):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1072):\n if condition:\n break\n```", "sample_id": "python_hard_6b8d7492", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1123():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1123():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_de7cd23f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1451(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1451(a: int, b: int) -> int:\n```", "sample_id": "python_hard_3ed857d0", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1090):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1090):\n if condition:\n break\n```", "sample_id": "python_medium_04a1f6bc", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1654(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1654(a: int, b: int) -> int:\n```", "sample_id": "python_easy_9eb7a96f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1896):\n for j in range(n_v1896):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1896):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_aa5531ba", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1888():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1888():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_4b36e080", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1460):\n```", "sample_id": "python_medium_16d6e089", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1316():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1316():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_2d36abb2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1300(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1300(a: int, b: int) -> int:\n```", "sample_id": "python_easy_28ad9001", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1702(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1702(first_number, second_number):\n```", "sample_id": "python_easy_07027214", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v741):\n for j in range(n_v741):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v741):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_060886aa", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1954):\n for j in range(n_v1954):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1954):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_c1ae5780", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v665():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v665():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_3addbfb8", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v117():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v117():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_d60379f4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1499():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1499():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_c94bb36e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v630):\n for j in range(n_v630):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v630):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_9a09f406", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v269(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v269(first_number, second_number):\n```", "sample_id": "python_easy_84721658", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v150(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v150(a: int, b: int) -> int:\n```", "sample_id": "python_easy_1c34fc41", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v362():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v362():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_570827fb", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v6():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v6():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_87f364ac", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v841():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v841():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_450fb64b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1065(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1065(first_number, second_number):\n```", "sample_id": "python_medium_381f0164", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v936():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v936():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_b07ab8f1", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1262():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1262():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_ee38abd5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1857(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1857(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_c0009912", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v470(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v470(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_3420970b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v749):\n```", "sample_id": "python_hard_7ecba914", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v137():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v137():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_da8fe98b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v149():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v149():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_80b70b3e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1861):\n for j in range(n_v1861):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1861):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_a4baa53a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v514():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v514():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_7a6230d6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v69():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v69():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_1a98cbd4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1942():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1942():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_b5ff38e3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1970(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1970(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_e9b6ab72", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1564(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1564(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_bd4a600d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v37():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v37():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_512ad801", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1199():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1199():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_11b8f5ac", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1647):\n for j in range(n_v1647):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1647):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_63dfda09", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1220(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1220(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_ac6f2293", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1672):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1672):\n if condition:\n break\n```", "sample_id": "python_hard_56cd004a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v152):\n```", "sample_id": "python_medium_463ff7e3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v344(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v344(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_6392e1e2", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1856):\n for j in range(n_v1856):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1856):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_1b252e89", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v129():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v129():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_45be534d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v878):\n for j in range(n_v878):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v878):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d81e07af", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1191):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1191):\n if condition:\n break\n```", "sample_id": "python_hard_82ee5da0", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v636():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v636():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_c7696ccf", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v374):\n for j in range(n_v374):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v374):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_867adcf9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v90():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v90():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_4e1ac063", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1302():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1302():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_4e4fdfa4", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1981(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1981(first_number, second_number):\n```", "sample_id": "python_hard_98504f46", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1576():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1576():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_a1e988a9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1809(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1809(first_number, second_number):\n```", "sample_id": "python_medium_4a5e187a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1427(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1427(a: int, b: int) -> int:\n```", "sample_id": "python_hard_2baa5bf8", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v191):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v191):\n if condition:\n break\n```", "sample_id": "python_hard_a8be9b41", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v550():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v550():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_a22bf289", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v230):\n for j in range(n_v230):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v230):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_a15be030", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1620):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1620):\n if condition:\n break\n```", "sample_id": "python_hard_19378069", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1915():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1915():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_c74b1c0f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_9cfea75d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1102(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1102(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_fe54dd91", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v151():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v151():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_eaf7c62c", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1471(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1471(a: int, b: int) -> int:\n```", "sample_id": "python_medium_bbd70867", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1607(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1607(a: int, b: int) -> int:\n```", "sample_id": "python_medium_cf0e0372", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1760):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1760):\n if condition:\n break\n```", "sample_id": "python_hard_ca8a0b8c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v933():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v933():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_fdb84c88", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v101(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v101(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_08747b08", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v724():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v724():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_cf19b23a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1265():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1265():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_1085ee99", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v325():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v325():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_37922918", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v84():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v84():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_56bbf34e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v596(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v596(a: int, b: int) -> int:\n```", "sample_id": "python_hard_8fced6fc", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v312):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v312):\n if condition:\n break\n```", "sample_id": "python_medium_c75bd40e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1264):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1264):\n if condition:\n break\n```", "sample_id": "python_hard_6b1b3cd1", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v776():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v776():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_bddc6b6e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1000():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1000():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_8072c4e8", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v780):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v780):\n if condition:\n break\n```", "sample_id": "python_medium_b1d8c5bb", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v118):\n```", "sample_id": "python_hard_b354640f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1362):\n for j in range(n_v1362):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1362):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_2f317c86", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1591(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1591(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_56bb3800", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1109):\n for j in range(n_v1109):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1109):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_6c504e2e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1611():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1611():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_573153cd", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1771(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1771(first_number, second_number):\n```", "sample_id": "python_easy_8f4852be", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v75):\n for j in range(n_v75):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v75):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_3f1e1c17", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1547():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1547():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_abf4ed19", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1561):\n for j in range(n_v1561):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1561):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_f1a4d17c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1250(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1250(first_number, second_number):\n```", "sample_id": "python_hard_af772395", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1539():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1539():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_01615e24", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1427():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1427():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_3834eb30", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1409():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1409():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_3cf76eda", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1675():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1675():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_ba73924b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1402):\n```", "sample_id": "python_hard_fc9145ed", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1471):\n for j in range(n_v1471):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1471):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_60d6dc66", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1059):\n for j in range(n_v1059):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1059):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_9a5238d4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v453():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v453():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_bd806c3b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1893(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1893(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_b0a76553", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1437):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1437):\n if condition:\n break\n```", "sample_id": "python_hard_859d72c1", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1289):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1289):\n if condition:\n break\n```", "sample_id": "python_hard_3184bbd8", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v624():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v624():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_9ee94167", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1746():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1746():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_7682bebf", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1901():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1901():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_3130a002", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v685(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v685(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_8fe2a92e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1496(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1496(first_number, second_number):\n```", "sample_id": "python_medium_c581ecd2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1251(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1251(a: int, b: int) -> int:\n```", "sample_id": "python_hard_54d9e8db", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v943():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v943():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_8ea807c1", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v873():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v873():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_c6d48216", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v597():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v597():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_389ae021", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1488(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1488(a: int, b: int) -> int:\n```", "sample_id": "python_medium_f00be343", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1799():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1799():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_b694e128", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v365):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v365):\n if condition:\n break\n```", "sample_id": "python_medium_ab3b599c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v499):\n for j in range(n_v499):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v499):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_22ad04c5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1628(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1628(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_a8ea2fa4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v614(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v614(a: int, b: int) -> int:\n```", "sample_id": "python_hard_ce498f59", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1334(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1334(first_number, second_number):\n```", "sample_id": "python_easy_6fed41da", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v94(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v94(first_number, second_number):\n```", "sample_id": "python_medium_0eaaf32e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1466():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1466():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_cf165ee5", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1140(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1140(first_number, second_number):\n```", "sample_id": "python_medium_8e1e7afe", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1341(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1341(a: int, b: int) -> int:\n```", "sample_id": "python_medium_63402144", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v773(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v773(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_d21ea295", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v446():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v446():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_764a7946", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v233):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v233):\n if condition:\n break\n```", "sample_id": "python_medium_45e1951c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v993(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v993(a: int, b: int) -> int:\n```", "sample_id": "python_hard_a1ceca84", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1017():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1017():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_2cf5966d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1444(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1444(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_663c0861", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v266(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v266(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_8eb8354e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v248():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v248():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_7b3bba39", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1169):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1169):\n if condition:\n break\n```", "sample_id": "python_hard_14e2c030", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1043():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1043():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_31d77309", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v76):\n for j in range(n_v76):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v76):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_63e56f41", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v250(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v250(first_number, second_number):\n```", "sample_id": "python_hard_f735cd42", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1331(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1331(first_number, second_number):\n```", "sample_id": "python_medium_0b963ec0", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v779():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v779():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_9d0debe2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v426():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v426():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_8db796da", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v340):\n```", "sample_id": "python_medium_1b29a522", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1865(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1865(a: int, b: int) -> int:\n```", "sample_id": "python_easy_0f8f64d6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v457):\n```", "sample_id": "python_hard_7db78de9", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1798():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1798():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_ded65e0f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1674(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1674(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d2381c59", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v645):\n```", "sample_id": "python_medium_d8db7db1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1797):\n```", "sample_id": "python_hard_d5bf8135", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1873(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1873(first_number, second_number):\n```", "sample_id": "python_easy_a32798b2", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1647(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1647(first_number, second_number):\n```", "sample_id": "python_hard_d707e2f5", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v415(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v415(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_96b4d34a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v877(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v877(first_number, second_number):\n```", "sample_id": "python_medium_3f2b0ac9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1316():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1316():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_6bfde614", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v615():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v615():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_79ab58db", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1257):\n```", "sample_id": "python_medium_43340864", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1133(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1133(a: int, b: int) -> int:\n```", "sample_id": "python_hard_b464d8cd", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v94):\n```", "sample_id": "python_hard_37b010ee", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v580():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v580():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_721d4179", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1479():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1479():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_7933dabd", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v617():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v617():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_8cac91ed", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1539):\n```", "sample_id": "python_hard_58746ddb", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v711(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v711(first_number, second_number):\n```", "sample_id": "python_medium_57496809", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v762(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v762(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_91d3993a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1577):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1577):\n if condition:\n break\n```", "sample_id": "python_medium_274417bd", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v203(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v203(a: int, b: int) -> int:\n```", "sample_id": "python_easy_0abf049f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v259(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v259(a: int, b: int) -> int:\n```", "sample_id": "python_easy_7168a94f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v867(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v867(first_number, second_number):\n```", "sample_id": "python_medium_c913295f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1128():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1128():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_aef7587a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v198(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v198(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_2317cd76", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v717():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v717():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_d1e4716b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1661):\n for j in range(n_v1661):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1661):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_5a159ed0", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v675(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v675(first_number, second_number):\n```", "sample_id": "python_hard_a5eaba2e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1146):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1146):\n if condition:\n break\n```", "sample_id": "python_hard_a3368fea", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v90():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v90():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_e44bab97", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v588):\n for j in range(n_v588):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v588):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_b08ced28", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v132():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v132():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_988b399c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v613):\n```", "sample_id": "python_hard_d4883dd9", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v246(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v246(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_1760b494", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1788):\n for j in range(n_v1788):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1788):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_05905e0f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1922):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1922):\n if condition:\n break\n```", "sample_id": "python_medium_782debdc", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v715():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v715():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_5d0fba77", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1304(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1304(first_number, second_number):\n```", "sample_id": "python_hard_f8ce5687", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1119):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1119):\n if condition:\n break\n```", "sample_id": "python_medium_5bbed690", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v932():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v932():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_08ab39c6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v39():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v39():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_bb42245c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v844):\n for j in range(n_v844):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v844):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ced89f0a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v45(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v45(a: int, b: int) -> int:\n```", "sample_id": "python_hard_5dc6d5b6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1126():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1126():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_6b7380e1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1557):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1557):\n if condition:\n break\n```", "sample_id": "python_hard_3e898a64", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v995():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v995():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_9b7c8b20", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1967):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1967):\n if condition:\n break\n```", "sample_id": "python_hard_dd20287e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1012):\n```", "sample_id": "python_medium_46b7ea4f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v784):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v784):\n if condition:\n break\n```", "sample_id": "python_hard_c921e499", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v116():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v116():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_3781fae5", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1281():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1281():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_91bb31bb", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v653():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v653():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_d1b4d125", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1812():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1812():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_3fe05722", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1360):\n for j in range(n_v1360):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1360):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_904eb504", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1824(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1824(first_number, second_number):\n```", "sample_id": "python_easy_ad74e04b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v412():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v412():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_fc9ec6af", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v68(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v68(a: int, b: int) -> int:\n```", "sample_id": "python_medium_43aa6ad3", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1828():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1828():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_3cd19344", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v665):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v665):\n if condition:\n break\n```", "sample_id": "python_medium_ce83d01c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1431):\n```", "sample_id": "python_medium_1621e2fe", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1340):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1340):\n if condition:\n break\n```", "sample_id": "python_medium_d005b1c5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v126(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v126(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f7107c7c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v829):\n```", "sample_id": "python_medium_6a8b3516", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v176():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v176():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_c78397c5", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v524():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v524():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_b19b11cb", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1534():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1534():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_deae876e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1716(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1716(a: int, b: int) -> int:\n```", "sample_id": "python_medium_cb75ccec", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v80(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v80(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_448621a1", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v452(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v452(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_07ce64ea", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1212):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1212):\n if condition:\n break\n```", "sample_id": "python_hard_488fb76f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1896(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1896(first_number, second_number):\n```", "sample_id": "python_medium_f9251031", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v382(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v382(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_5b0aa71c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1805):\n```", "sample_id": "python_medium_a39629ed", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1734(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1734(first_number, second_number):\n```", "sample_id": "python_easy_a4001630", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v922():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v922():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_7dd7924a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1618():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1618():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_0e6744aa", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1597(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1597(a: int, b: int) -> int:\n```", "sample_id": "python_easy_0186da12", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1745():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1745():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_674e91bc", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v861):\n for j in range(n_v861):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v861):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_f4157952", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v659():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v659():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_6e1a26d5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v444():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v444():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_7604a78f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v606():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v606():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_4f3aaf02", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v480):\n for j in range(n_v480):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v480):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e121c990", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v845):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v845):\n if condition:\n break\n```", "sample_id": "python_hard_65d6544a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1543):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1543):\n if condition:\n break\n```", "sample_id": "python_hard_f10fd6f2", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v692):\n```", "sample_id": "python_medium_264bf3b8", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1900):\n for j in range(n_v1900):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1900):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_6a5a8b19", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1446(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1446(a: int, b: int) -> int:\n```", "sample_id": "python_easy_4b9b5ba5", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1253():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1253():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_3a42caaa", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v23():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v23():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_5fa2d374", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v342():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v342():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_58328d22", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v776():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v776():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_2111102b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v382):\n for j in range(n_v382):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v382):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_2f371888", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v775():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v775():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_c987ed7c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1676):\n```", "sample_id": "python_medium_9640c87e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1657():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1657():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_b48c6b5c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v171():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v171():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_433b5968", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v87(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v87(a: int, b: int) -> int:\n```", "sample_id": "python_hard_07bcea70", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v549(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v549(a: int, b: int) -> int:\n```", "sample_id": "python_medium_e50d8c80", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v775():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v775():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_587c610b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1451):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1451):\n if condition:\n break\n```", "sample_id": "python_medium_de958814", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1895(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1895(a: int, b: int) -> int:\n```", "sample_id": "python_hard_3e443361", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v496(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v496(first_number, second_number):\n```", "sample_id": "python_medium_d35614a6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v551):\n for j in range(n_v551):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v551):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_1726dbbc", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v724):\n for j in range(n_v724):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v724):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_2c64db53", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1439):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1439):\n if condition:\n break\n```", "sample_id": "python_hard_c7cabd5b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v249):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v249):\n if condition:\n break\n```", "sample_id": "python_hard_461e5831", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v640():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v640():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_d1a9acc2", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v469):\n for j in range(n_v469):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v469):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_38a6dbc3", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v441(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v441(a: int, b: int) -> int:\n```", "sample_id": "python_hard_67dc0c43", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v246():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v246():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_48dc8305", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v669():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v669():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_50b1de8b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1062():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1062():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_e852b81d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1485):\n for j in range(n_v1485):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1485):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_5da76a57", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1939):\n for j in range(n_v1939):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1939):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_0204a3b3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1180):\n for j in range(n_v1180):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1180):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_7346a8f2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1843):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1843):\n if condition:\n break\n```", "sample_id": "python_medium_295c6fec", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1678):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1678):\n if condition:\n break\n```", "sample_id": "python_medium_83fcf2cd", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1267():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1267():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_d6828517", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1442():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1442():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_1c3d7ed6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v908():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v908():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_9a18988c", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1249):\n```", "sample_id": "python_hard_fc6d63f5", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v523(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v523(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_4b6d6ec4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1329(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1329(first_number, second_number):\n```", "sample_id": "python_easy_cea8ea60", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1757(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1757(first_number, second_number):\n```", "sample_id": "python_medium_5dbc60d7", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v671(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v671(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_cab6881f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1762(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1762(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_6358d7cb", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v848():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v848():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_af57610d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v790):\n```", "sample_id": "python_hard_0e87d7aa", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1019(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1019(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_b87d74e4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1563(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1563(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_01babab8", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v688):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v688):\n if condition:\n break\n```", "sample_id": "python_medium_cf4f6e93", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v968):\n```", "sample_id": "python_medium_c89ab6b9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1814(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1814(a: int, b: int) -> int:\n```", "sample_id": "python_medium_e1e33ca9", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v287):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v287):\n if condition:\n break\n```", "sample_id": "python_medium_a8103bc8", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v902):\n```", "sample_id": "python_medium_45cd1411", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v392):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v392):\n if condition:\n break\n```", "sample_id": "python_medium_70c55da2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v178():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v178():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_c2373031", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1265):\n for j in range(n_v1265):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1265):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_40e4be51", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v209):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v209):\n if condition:\n break\n```", "sample_id": "python_hard_1c1a049b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v722):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v722):\n if condition:\n break\n```", "sample_id": "python_hard_59aef9ee", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v347():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v347():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_4c1f9c5a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v875():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v875():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_84395a5b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v194):\n```", "sample_id": "python_hard_32aa9c00", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v417):\n for j in range(n_v417):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v417):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e6053347", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1846):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1846):\n if condition:\n break\n```", "sample_id": "python_hard_e7e72787", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v593):\n for j in range(n_v593):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v593):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_62d95e07", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1370():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1370():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_c20fc37a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v476():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v476():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_0dbfda9d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1690(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1690(first_number, second_number):\n```", "sample_id": "python_medium_d009b149", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1889():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1889():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_1e387e1d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1996):\n```", "sample_id": "python_medium_2570c8ff", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v495):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v495):\n if condition:\n break\n```", "sample_id": "python_medium_8d9c6d44", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1182(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1182(first_number, second_number):\n```", "sample_id": "python_medium_62754106", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v998):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v998):\n if condition:\n break\n```", "sample_id": "python_medium_66d04baf", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1463(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1463(a: int, b: int) -> int:\n```", "sample_id": "python_medium_ca2feda2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1862():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1862():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_2cc0f939", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1419):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1419):\n if condition:\n break\n```", "sample_id": "python_hard_5bbaeb3b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1005():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1005():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_f9d11ccc", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v331():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v331():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_8f697c80", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1703(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1703(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_31764c35", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v113():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v113():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_8a32b796", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v442():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v442():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_4a602c49", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v744(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v744(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_36b654a2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v886):\n```", "sample_id": "python_medium_e0e1f4ea", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1140():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1140():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_91457727", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1159():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1159():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_28708de0", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v899(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v899(first_number, second_number):\n```", "sample_id": "python_easy_3cbdd043", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v864):\n for j in range(n_v864):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v864):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_1c831c05", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v322):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v322):\n if condition:\n break\n```", "sample_id": "python_medium_8144f6b5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v455):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v455):\n if condition:\n break\n```", "sample_id": "python_medium_4d2afc96", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1241():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1241():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_9475598b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1735):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1735):\n if condition:\n break\n```", "sample_id": "python_medium_42854cd0", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1627():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1627():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_a44b80ce", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1578(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1578(first_number, second_number):\n```", "sample_id": "python_medium_bac435d4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1220():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1220():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_db5932ec", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v162):\n```", "sample_id": "python_hard_7abfaad2", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1673):\n```", "sample_id": "python_hard_4afbe10d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v675():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v675():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_b5398d41", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1855(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1855(first_number, second_number):\n```", "sample_id": "python_medium_9c106ff4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v534():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v534():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_8c69e343", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v797):\n for j in range(n_v797):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v797):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_b8741b1f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v505():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v505():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_3910ff97", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v329():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v329():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_26efdef8", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1010(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1010(a: int, b: int) -> int:\n```", "sample_id": "python_medium_50c4f7fd", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1923):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1923):\n if condition:\n break\n```", "sample_id": "python_medium_c9b716c3", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1426():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1426():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_d664ef35", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v164():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v164():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_298d10ab", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1983():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1983():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_ed0ca73a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1851):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1851):\n if condition:\n break\n```", "sample_id": "python_medium_a8739551", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1555():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1555():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_f0334a3c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v750(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v750(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_346c7f4d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v980():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v980():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_c0953fbf", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1151):\n```", "sample_id": "python_medium_5dbc4557", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1071(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1071(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_5d658c10", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v180):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v180):\n if condition:\n break\n```", "sample_id": "python_hard_3109e48e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v336):\n```", "sample_id": "python_medium_aeb09182", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1738):\n```", "sample_id": "python_medium_90ee764d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1564):\n for j in range(n_v1564):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1564):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_34743551", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1935():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1935():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_c555b527", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1563():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1563():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_ad56fd92", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v431(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v431(a: int, b: int) -> int:\n```", "sample_id": "python_hard_dc5cc8b1", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1853):\n```", "sample_id": "python_medium_62f2f590", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v313():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v313():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_cab40c4d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v635():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v635():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_54830775", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v949(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v949(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_7b4f4c22", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v385):\n```", "sample_id": "python_medium_921bdbab", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1784(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1784(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_2a1f4df3", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v397(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v397(a: int, b: int) -> int:\n```", "sample_id": "python_hard_90f04e38", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v166():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v166():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5d1de6b4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1930(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1930(a: int, b: int) -> int:\n```", "sample_id": "python_hard_d44f64f6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v960):\n```", "sample_id": "python_hard_38064550", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v96():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v96():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_6f42f930", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v847):\n for j in range(n_v847):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v847):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_8488881e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v181():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v181():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_76ae7121", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1985):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1985):\n if condition:\n break\n```", "sample_id": "python_medium_b5b0cb10", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1458):\n```", "sample_id": "python_hard_b127acee", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v356():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v356():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_2a670033", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1925):\n for j in range(n_v1925):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1925):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_36accd81", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v939(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v939(a: int, b: int) -> int:\n```", "sample_id": "python_easy_39ecb9ef", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v508):\n```", "sample_id": "python_hard_0df81cf0", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v318():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v318():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_a643352b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v404):\n```", "sample_id": "python_medium_5e0c90f9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v816(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v816(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_e3fff18f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1139():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1139():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_b5596eb3", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v527():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v527():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_7657c77e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1438):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1438):\n if condition:\n break\n```", "sample_id": "python_hard_72eb0594", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v957(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v957(a: int, b: int) -> int:\n```", "sample_id": "python_hard_60896252", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1733):\n```", "sample_id": "python_hard_1d55e5cd", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1792):\n for j in range(n_v1792):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1792):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_17f58e02", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v161():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v161():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_6711bfcf", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1763):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1763):\n if condition:\n break\n```", "sample_id": "python_medium_5aea7661", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v44(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v44(first_number, second_number):\n```", "sample_id": "python_easy_8b1f2022", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1871():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1871():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_8a1a9ecf", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1938(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1938(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_e70883ed", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v363):\n```", "sample_id": "python_medium_7a936da2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v544):\n for j in range(n_v544):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v544):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_0d9b849c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1441(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1441(a: int, b: int) -> int:\n```", "sample_id": "python_hard_17c429b2", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1705):\n for j in range(n_v1705):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1705):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_b214ac65", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v813():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v813():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_b1400859", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1959(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1959(first_number, second_number):\n```", "sample_id": "python_hard_b9becfbc", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1060):\n for j in range(n_v1060):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1060):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_6cf09318", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1231():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1231():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_a5be5d7d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v982(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v982(first_number, second_number):\n```", "sample_id": "python_easy_c2c8d44f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1845):\n for j in range(n_v1845):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1845):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_4671ba03", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1094):\n```", "sample_id": "python_hard_26b1ba88", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v569):\n for j in range(n_v569):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v569):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_171e6a56", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1230(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1230(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_64313863", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v661):\n```", "sample_id": "python_hard_ca1b1685", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v444(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v444(a: int, b: int) -> int:\n```", "sample_id": "python_hard_e34b7abc", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v102):\n```", "sample_id": "python_hard_15046148", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v975(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v975(a: int, b: int) -> int:\n```", "sample_id": "python_hard_c4173752", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1146():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1146():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5eb4450a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v395(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v395(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_e5c75255", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1995():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1995():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_e85a9430", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1885(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1885(first_number, second_number):\n```", "sample_id": "python_hard_e1b31f8d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v769():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v769():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_aa51cae1", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v729():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v729():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_1d817b2c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v71():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v71():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_a9260a2d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1780(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1780(a: int, b: int) -> int:\n```", "sample_id": "python_easy_5c1acb14", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1370(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1370(a: int, b: int) -> int:\n```", "sample_id": "python_easy_3cb78b1d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v710(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v710(a: int, b: int) -> int:\n```", "sample_id": "python_hard_a819aa78", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1731():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1731():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_800512fb", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1001():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1001():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_aa4e866e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v719():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v719():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_4c5dad86", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1497():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1497():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_2563e10a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1928(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1928(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_a949efdf", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v657():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v657():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_2b4646dc", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1994(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1994(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_14bbfa58", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1464():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1464():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_ba44a627", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v243():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v243():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_8279cc92", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1694(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1694(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d972a9d1", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v410():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v410():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_993745b8", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_b277e062", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1348(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1348(a: int, b: int) -> int:\n```", "sample_id": "python_medium_1c2bd72f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1727():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1727():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_5b419ddb", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1772():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1772():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_b45da3fd", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1012(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1012(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_2079636d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v792():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v792():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_99827b98", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v280(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v280(first_number, second_number):\n```", "sample_id": "python_easy_03362d94", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1591):\n```", "sample_id": "python_medium_015de957", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1389):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1389):\n if condition:\n break\n```", "sample_id": "python_hard_dc0e18d3", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1200):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1200):\n if condition:\n break\n```", "sample_id": "python_medium_6127cdf4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1069):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1069):\n if condition:\n break\n```", "sample_id": "python_medium_c4539d46", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v909():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v909():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_8767fb3d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v720():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v720():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5e362b9f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v496):\n```", "sample_id": "python_hard_17a537ce", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1913(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1913(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_e0a67833", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1786(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1786(first_number, second_number):\n```", "sample_id": "python_hard_a48a5981", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v650):\n```", "sample_id": "python_medium_95b2b152", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v751(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v751(a: int, b: int) -> int:\n```", "sample_id": "python_hard_ca6da4b4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1221(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1221(first_number, second_number):\n```", "sample_id": "python_easy_1757c07a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1845(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1845(first_number, second_number):\n```", "sample_id": "python_hard_25c6b011", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1467():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1467():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_a8b99479", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v637():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v637():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_d0db6cb4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v757():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v757():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_59949825", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1565(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1565(a: int, b: int) -> int:\n```", "sample_id": "python_easy_69dfa2f2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v257):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v257):\n if condition:\n break\n```", "sample_id": "python_hard_cc3a00d0", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1432():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1432():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_4019bde7", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v226():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v226():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_cb741703", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1078):\n for j in range(n_v1078):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1078):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_5e582b65", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1764):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1764):\n if condition:\n break\n```", "sample_id": "python_medium_ea2b19f2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v285):\n for j in range(n_v285):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v285):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_f92d4717", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v506):\n```", "sample_id": "python_hard_f384c87f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v610(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v610(a: int, b: int) -> int:\n```", "sample_id": "python_hard_ac697727", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v895():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v895():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_8b402614", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v542):\n for j in range(n_v542):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v542):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_a760262e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1747(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1747(first_number, second_number):\n```", "sample_id": "python_hard_405096ae", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v643(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v643(a: int, b: int) -> int:\n```", "sample_id": "python_medium_7b70cb2c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v481):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v481):\n if condition:\n break\n```", "sample_id": "python_hard_904d95ae", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1779(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1779(a: int, b: int) -> int:\n```", "sample_id": "python_easy_3d5169de", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1802):\n for j in range(n_v1802):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1802):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_492363ba", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v971):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v971):\n if condition:\n break\n```", "sample_id": "python_medium_bfe4e752", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1128(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1128(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_0cb10eb5", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1624(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1624(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_3c1fbf5d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1170(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1170(first_number, second_number):\n```", "sample_id": "python_medium_c3294ff9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1203):\n```", "sample_id": "python_medium_0b49a5d5", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v112(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v112(first_number, second_number):\n```", "sample_id": "python_medium_17bce5f1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v970):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v970):\n if condition:\n break\n```", "sample_id": "python_medium_68a6a796", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1887):\n for j in range(n_v1887):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1887):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_88b11b9d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1203(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1203(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_078e5596", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1226(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1226(first_number, second_number):\n```", "sample_id": "python_medium_76e4032b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v771():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v771():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_49747ed3", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1177):\n```", "sample_id": "python_medium_353855e7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v918):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v918):\n if condition:\n break\n```", "sample_id": "python_hard_cf66a2e1", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1236):\n for j in range(n_v1236):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1236):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_95ee2379", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v408(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v408(first_number, second_number):\n```", "sample_id": "python_medium_80a73326", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1750():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1750():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_31e85afb", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1872):\n```", "sample_id": "python_medium_488cc85e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1089(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1089(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_b3e58d1e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1307(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1307(a: int, b: int) -> int:\n```", "sample_id": "python_medium_996c8151", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1242(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1242(first_number, second_number):\n```", "sample_id": "python_hard_eda7c845", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1155):\n for j in range(n_v1155):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1155):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ab02b2c7", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1103(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1103(a: int, b: int) -> int:\n```", "sample_id": "python_easy_efb3ff68", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v424(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v424(a: int, b: int) -> int:\n```", "sample_id": "python_hard_e81e7fd0", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v653():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v653():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_f959b145", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v373():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v373():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_c7f982f0", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v692(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v692(first_number, second_number):\n```", "sample_id": "python_easy_2400a440", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1516(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1516(a: int, b: int) -> int:\n```", "sample_id": "python_easy_00461fc7", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v752():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v752():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_53b5150e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1778):\n for j in range(n_v1778):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1778):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_10f06b68", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v997(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v997(first_number, second_number):\n```", "sample_id": "python_medium_3a54016e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1189(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1189(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_1118d92e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1777():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1777():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_bb666d6a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v388(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v388(first_number, second_number):\n```", "sample_id": "python_hard_c980a8d6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1589(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1589(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_efca512d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1612):\n for j in range(n_v1612):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1612):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_4d676713", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1366():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1366():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_c280f253", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1460(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1460(first_number, second_number):\n```", "sample_id": "python_easy_0df6bd1f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v516):\n```", "sample_id": "python_hard_3d20dd9e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1372):\n```", "sample_id": "python_hard_ba23f2a8", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v810):\n for j in range(n_v810):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v810):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_74535d57", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1129():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1129():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_c0da16e0", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1801():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1801():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_7cc97887", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v403):\n```", "sample_id": "python_hard_60462d42", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1741):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1741):\n if condition:\n break\n```", "sample_id": "python_medium_9df24a98", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v864():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v864():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_9a27e3e7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1722(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1722(first_number, second_number):\n```", "sample_id": "python_easy_bf5b61e3", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1082():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1082():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_0ad3bfb3", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1489():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1489():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_e943bc78", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v858):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v858):\n if condition:\n break\n```", "sample_id": "python_medium_4310899f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1085():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1085():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_0c9f1265", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1038():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1038():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_1e2e856c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1799):\n```", "sample_id": "python_medium_52038d9d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1994():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1994():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_81f722c6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1951(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1951(a: int, b: int) -> int:\n```", "sample_id": "python_easy_24d61cd8", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v578():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v578():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_5cbc02ed", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1797():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1797():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_b87b2480", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v422():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v422():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_1f9a21a0", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1081(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1081(a: int, b: int) -> int:\n```", "sample_id": "python_hard_bc1cb8c4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v576(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v576(first_number, second_number):\n```", "sample_id": "python_medium_420389d2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1354(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1354(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_0c5cbf54", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1227(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1227(first_number, second_number):\n```", "sample_id": "python_medium_23f39abb", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1614(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1614(first_number, second_number):\n```", "sample_id": "python_easy_1325dfe0", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v688():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v688():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_ff54f007", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1932():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1932():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a15e30ae", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v781():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v781():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_484f586a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1269(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1269(first_number, second_number):\n```", "sample_id": "python_hard_be834089", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1755(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1755(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_bb811e0d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v485):\n```", "sample_id": "python_hard_2d68b51a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v573):\n for j in range(n_v573):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v573):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_1e75bba0", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v994():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v994():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_29640e28", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1548):\n```", "sample_id": "python_medium_5e57f957", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1568():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1568():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_b12b2f62", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1456():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1456():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_6e2ae92a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v891():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v891():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_16ef0740", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v916):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v916):\n if condition:\n break\n```", "sample_id": "python_hard_7d8087d1", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v207():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v207():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_812c89a6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1752(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1752(first_number, second_number):\n```", "sample_id": "python_hard_e80f05d3", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v63):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v63):\n if condition:\n break\n```", "sample_id": "python_medium_583f78e3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_9cfea75d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1305():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1305():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_59623bfa", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v779(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v779(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_cda3b2af", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v509(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v509(a: int, b: int) -> int:\n```", "sample_id": "python_hard_68d35636", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v974():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v974():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_29856912", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1217():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1217():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_c1fdb4e2", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v598(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v598(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_7b41a184", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1002(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1002(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_272195d0", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v635():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v635():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_1aaba1ef", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1917):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1917):\n if condition:\n break\n```", "sample_id": "python_medium_2b3b9d2e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1758):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1758):\n if condition:\n break\n```", "sample_id": "python_medium_d5cd11c7", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v206):\n for j in range(n_v206):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v206):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_dd2c5810", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1333():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1333():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_b1d38bda", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v413():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v413():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_87d6385a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1414(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1414(first_number, second_number):\n```", "sample_id": "python_easy_90c5dff1", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1293():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1293():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_951800fe", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1895():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1895():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_07f050fb", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v425):\n for j in range(n_v425):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v425):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_175962bd", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v220():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v220():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_716c7b7a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v457(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v457(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_3babda69", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v812(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v812(a: int, b: int) -> int:\n```", "sample_id": "python_easy_563c0e75", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1085(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1085(a: int, b: int) -> int:\n```", "sample_id": "python_medium_16c7d518", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1500():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1500():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_44476b09", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1202(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1202(a: int, b: int) -> int:\n```", "sample_id": "python_medium_f9e99d75", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v463(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v463(first_number, second_number):\n```", "sample_id": "python_hard_ce3260da", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1511():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1511():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_61eb9956", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1211):\n for j in range(n_v1211):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1211):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_f67d01f7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v129):\n```", "sample_id": "python_hard_c6d271b1", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1495():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1495():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_cbdb4cd3", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1986(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1986(a: int, b: int) -> int:\n```", "sample_id": "python_easy_516beced", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1237):\n```", "sample_id": "python_hard_615a9e1e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v940():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v940():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_f944f8a3", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1477):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1477):\n if condition:\n break\n```", "sample_id": "python_medium_0360df80", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v688(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v688(a: int, b: int) -> int:\n```", "sample_id": "python_hard_0f04f0dd", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v490():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v490():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_e905fe65", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1100(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1100(first_number, second_number):\n```", "sample_id": "python_medium_c9a59e84", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v507(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v507(a: int, b: int) -> int:\n```", "sample_id": "python_easy_4b0edaf7", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1181():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1181():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_0afa4bc7", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v921(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v921(a: int, b: int) -> int:\n```", "sample_id": "python_medium_8e2d789c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1187):\n```", "sample_id": "python_hard_3c642642", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1561():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1561():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_efe9ac8b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1091(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1091(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_598702e0", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1798):\n```", "sample_id": "python_medium_819877c7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_b277e062", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v863(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v863(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_3cfbc82e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1295():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1295():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_6282b6a1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v926):\n for j in range(n_v926):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v926):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_50728133", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v648(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v648(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_a0576f51", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1197():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1197():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_2b9e04e4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v53(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v53(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_3dc235d4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1463):\n for j in range(n_v1463):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1463):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_aa5d1f3a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v146):\n for j in range(n_v146):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v146):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_b381742f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_9cfea75d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1137():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1137():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_dd61a76c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v369(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v369(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_0b4a45f4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1904(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1904(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_94ba83d5", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v249():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v249():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_dfde5f46", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1594):\n for j in range(n_v1594):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1594):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_bcfc7ff9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1149):\n```", "sample_id": "python_medium_8dce436a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v283():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v283():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_74d06735", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1541():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1541():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_1d585e4b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1607):\n```", "sample_id": "python_hard_0ae9acef", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1951():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1951():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_b571b08e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1782(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1782(first_number, second_number):\n```", "sample_id": "python_easy_aa3439fc", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v506():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v506():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_8d868ba7", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v318(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v318(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_10e7903a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1966():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1966():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_2d576c37", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1672():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1672():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_28606ca1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v617(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v617(a: int, b: int) -> int:\n```", "sample_id": "python_medium_c69e6b2c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1903():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1903():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_54b92fba", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1352(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1352(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_f46320c2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v384):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v384):\n if condition:\n break\n```", "sample_id": "python_medium_0dd1124c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v399):\n for j in range(n_v399):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v399):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_7c0be6ed", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1698():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1698():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_8372a194", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v869():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v869():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_f36ab544", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1684):\n for j in range(n_v1684):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1684):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_420d5e7b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1765):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1765):\n if condition:\n break\n```", "sample_id": "python_hard_fddd959d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v187():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v187():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_c00f0ae6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v919():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v919():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_d2094ab7", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v683():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v683():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_f8e118ef", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v9(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v9(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_b4ba378f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1953():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1953():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_87d41cb6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v495(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v495(a: int, b: int) -> int:\n```", "sample_id": "python_hard_b48e6f45", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1586():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1586():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_bb5904ed", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v649(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v649(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_7916667a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1800(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1800(a: int, b: int) -> int:\n```", "sample_id": "python_hard_20b5ba1a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1875(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1875(a: int, b: int) -> int:\n```", "sample_id": "python_easy_2dbb98f3", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v11):\n```", "sample_id": "python_medium_5c2d20ea", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1008():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1008():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_acca21b4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1524():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1524():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_2d466d34", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v161):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v161):\n if condition:\n break\n```", "sample_id": "python_medium_8bc259a8", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v88():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v88():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_de9a126c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v84(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v84(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_e4639c64", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v794(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v794(a: int, b: int) -> int:\n```", "sample_id": "python_easy_ae839a06", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v64():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v64():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_a7d031b5", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1592(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1592(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_1dba5733", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v349():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v349():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_ccf97368", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v803(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v803(a: int, b: int) -> int:\n```", "sample_id": "python_easy_725353a9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1477():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1477():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_ee0fe166", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v99):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v99):\n if condition:\n break\n```", "sample_id": "python_medium_8abc6dac", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1955(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1955(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f4108599", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v966(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v966(first_number, second_number):\n```", "sample_id": "python_easy_1a37e86a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1960():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1960():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_7843df10", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1288():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1288():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_9d5f5e6a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v74(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v74(a: int, b: int) -> int:\n```", "sample_id": "python_hard_a09a2d82", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1214(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1214(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_608ea992", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v544():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v544():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_e50a499a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v510():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v510():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_38a29084", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1635():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1635():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_3fb1b2ac", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v979():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v979():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_0fba3eb8", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v605(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v605(a: int, b: int) -> int:\n```", "sample_id": "python_easy_1279dad7", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v307):\n for j in range(n_v307):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v307):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_29ba2829", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1732(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1732(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_df0b0287", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v942(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v942(a: int, b: int) -> int:\n```", "sample_id": "python_medium_1e36b61a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v803():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v803():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_8e3ac34f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1673(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1673(first_number, second_number):\n```", "sample_id": "python_hard_fca34cab", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v158(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v158(a: int, b: int) -> int:\n```", "sample_id": "python_easy_66a523a5", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v30(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v30(first_number, second_number):\n```", "sample_id": "python_easy_dedac149", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v20():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v20():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_c08581ab", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1676():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1676():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_15f5c073", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v337(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v337(first_number, second_number):\n```", "sample_id": "python_easy_7f6a11fd", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1846():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1846():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_fecde116", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1756():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1756():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_3c61d856", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v908(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v908(a: int, b: int) -> int:\n```", "sample_id": "python_medium_0b614973", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1448):\n for j in range(n_v1448):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1448):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_61f2a16f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1474(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1474(first_number, second_number):\n```", "sample_id": "python_easy_cb7cd86b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v989(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v989(first_number, second_number):\n```", "sample_id": "python_medium_ab0beb3a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v156(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v156(a: int, b: int) -> int:\n```", "sample_id": "python_easy_046839f8", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v454():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v454():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_258a500d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v294):\n```", "sample_id": "python_hard_92f44e84", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v473):\n for j in range(n_v473):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v473):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_2b665890", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1836):\n```", "sample_id": "python_hard_07ff6376", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v297(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v297(a: int, b: int) -> int:\n```", "sample_id": "python_easy_44fe7486", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v830():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v830():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_b57d011f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v580():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v580():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_002af194", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1448():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1448():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_f6d253a3", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1930):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1930):\n if condition:\n break\n```", "sample_id": "python_medium_22245556", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v108(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v108(first_number, second_number):\n```", "sample_id": "python_hard_85b87632", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v356):\n for j in range(n_v356):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v356):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_2629f73e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v110(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v110(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_e3fcbee6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v833(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v833(a: int, b: int) -> int:\n```", "sample_id": "python_medium_bbbd7301", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v594():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v594():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_84d9977d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1744():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1744():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_0d596f86", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1162(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1162(first_number, second_number):\n```", "sample_id": "python_medium_bb17bfd2", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1667():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1667():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_8e23a03f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1915):\n```", "sample_id": "python_hard_3c5fe274", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v497():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v497():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_267f0f8f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v48():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v48():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_250d733a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v919(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v919(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_89427186", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v13():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v13():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_d4f0ecd5", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v932):\n```", "sample_id": "python_hard_30222283", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1866(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1866(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_671af561", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1964(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1964(a: int, b: int) -> int:\n```", "sample_id": "python_easy_3adfef37", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v828(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v828(first_number, second_number):\n```", "sample_id": "python_easy_beb6b679", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1027():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1027():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_89d7d0f7", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1803():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1803():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_28e3c273", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v185):\n```", "sample_id": "python_hard_4d0a1d39", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1127(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1127(a: int, b: int) -> int:\n```", "sample_id": "python_easy_a0bbe938", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1919():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1919():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_51b43116", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v767():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v767():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_afff7b67", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v548):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v548):\n if condition:\n break\n```", "sample_id": "python_medium_a2512a9b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1641(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1641(first_number, second_number):\n```", "sample_id": "python_medium_aff20b48", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v270(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v270(first_number, second_number):\n```", "sample_id": "python_hard_f710b324", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1782):\n for j in range(n_v1782):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1782):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_c864d226", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1958(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1958(first_number, second_number):\n```", "sample_id": "python_medium_628128c8", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1472(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1472(first_number, second_number):\n```", "sample_id": "python_hard_a11f98de", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v105):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v105):\n if condition:\n break\n```", "sample_id": "python_hard_bfcab432", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1566():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1566():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_2d994a58", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v956():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v956():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_db02e149", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v715):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v715):\n if condition:\n break\n```", "sample_id": "python_hard_7e95a664", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1873():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1873():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_ffea4ad6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1971():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1971():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_7b075124", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v698():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v698():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_400b2b96", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v954():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v954():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_4fd11362", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1985(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1985(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_0338e827", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v783():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v783():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_4b88bfd4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v637(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v637(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_935b3871", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v743(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v743(first_number, second_number):\n```", "sample_id": "python_easy_db6dbd60", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v319):\n```", "sample_id": "python_hard_6acb6014", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1622():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1622():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_89d9c4c3", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v488):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v488):\n if condition:\n break\n```", "sample_id": "python_hard_4539e69b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1104(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1104(first_number, second_number):\n```", "sample_id": "python_medium_85cfccf4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v402):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v402):\n if condition:\n break\n```", "sample_id": "python_medium_952a8c23", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v853():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v853():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_d13260db", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1286(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1286(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_e85462c8", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v7(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v7(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_7b88c8ef", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1378():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1378():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_73a811f1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1990(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1990(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_2b1503dd", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v850):\n```", "sample_id": "python_medium_92f8805d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v19):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v19):\n if condition:\n break\n```", "sample_id": "python_medium_c30a3e62", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v170(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v170(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_c8251425", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v748():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v748():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_3f76b7ef", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_9cfea75d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1143(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1143(a: int, b: int) -> int:\n```", "sample_id": "python_hard_ac3d3c87", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v590():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v590():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_9ad291a6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v17():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v17():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_c339b64c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1634):\n for j in range(n_v1634):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1634):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_50b7bc6b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v746(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v746(a: int, b: int) -> int:\n```", "sample_id": "python_medium_60ecc0d1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v920(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v920(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_fdb85b34", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v926():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v926():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_8d6a6e84", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1597():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1597():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_fc33b5b6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1602):\n for j in range(n_v1602):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1602):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_c1f8fb2f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v682():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v682():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_1637a695", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v237(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v237(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_ec4a8ba6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1613):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1613):\n if condition:\n break\n```", "sample_id": "python_medium_2cc9cf30", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1943():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1943():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_8b2340cd", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v736):\n```", "sample_id": "python_medium_2e27a2a5", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v714():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v714():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_9f7d9820", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1767):\n for j in range(n_v1767):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1767):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_94464b62", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1356(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1356(a: int, b: int) -> int:\n```", "sample_id": "python_medium_3e6a4788", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1605():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1605():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_9159a88d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v824(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v824(a: int, b: int) -> int:\n```", "sample_id": "python_medium_b93ca8f0", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1(first_number, second_number):\n```", "sample_id": "python_hard_6bc4abb5", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1221():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1221():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_ac3f74a9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1664):\n for j in range(n_v1664):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1664):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_14b140ae", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1224(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1224(a: int, b: int) -> int:\n```", "sample_id": "python_easy_d233dcfe", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1889):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1889):\n if condition:\n break\n```", "sample_id": "python_hard_9ef5ec24", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1395):\n for j in range(n_v1395):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1395):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_5ff9594c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v903(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v903(first_number, second_number):\n```", "sample_id": "python_medium_b9bfe48c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1415(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1415(a: int, b: int) -> int:\n```", "sample_id": "python_easy_0ce88086", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1170):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1170):\n if condition:\n break\n```", "sample_id": "python_medium_46db1978", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v257():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v257():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_c5199b67", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1720(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1720(a: int, b: int) -> int:\n```", "sample_id": "python_medium_0899f6b9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v543):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v543):\n if condition:\n break\n```", "sample_id": "python_hard_355cead1", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v590):\n for j in range(n_v590):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v590):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_624e669a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1352():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1352():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_3f8702f4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1916):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1916):\n if condition:\n break\n```", "sample_id": "python_medium_11879459", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v565):\n```", "sample_id": "python_hard_606c38c3", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1023(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1023(a: int, b: int) -> int:\n```", "sample_id": "python_medium_c15cdc0f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v701(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v701(a: int, b: int) -> int:\n```", "sample_id": "python_hard_f217ea66", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v691():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v691():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_6763c9a1", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_b277e062", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1503(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1503(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f5ebadce", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v543(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v543(a: int, b: int) -> int:\n```", "sample_id": "python_easy_4d0b1405", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v96(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v96(first_number, second_number):\n```", "sample_id": "python_hard_f1b53c05", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1982):\n for j in range(n_v1982):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1982):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_ae02667e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1421):\n```", "sample_id": "python_medium_3952c4a1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v627(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v627(a: int, b: int) -> int:\n```", "sample_id": "python_easy_9faffba3", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1655():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1655():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_0aae9621", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v449(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v449(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_3663586e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v901():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v901():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_160d2b97", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1644(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1644(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_221410b9", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v740():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v740():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_94f3190c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1187():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1187():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_5ec43198", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1844(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1844(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_3e616bec", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v813(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v813(a: int, b: int) -> int:\n```", "sample_id": "python_easy_ee220a23", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1684():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1684():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_19b622e6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v135):\n```", "sample_id": "python_medium_e045831e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v319():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v319():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a97cf979", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1961):\n```", "sample_id": "python_medium_bc9f190c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v429):\n for j in range(n_v429):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v429):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_8b91c69e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1007(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1007(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_566fb8b0", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1002):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1002):\n if condition:\n break\n```", "sample_id": "python_medium_73de84a4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1547():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1547():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_17a65616", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v320(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v320(first_number, second_number):\n```", "sample_id": "python_hard_24eabc96", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v778(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v778(a: int, b: int) -> int:\n```", "sample_id": "python_hard_2b941ac4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1401(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1401(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_62234f81", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1558():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1558():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_9d5762dc", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1036(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1036(first_number, second_number):\n```", "sample_id": "python_easy_6d6e8888", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1376):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1376):\n if condition:\n break\n```", "sample_id": "python_hard_da058eb5", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1112(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1112(a: int, b: int) -> int:\n```", "sample_id": "python_medium_077efb93", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v481(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v481(first_number, second_number):\n```", "sample_id": "python_hard_ac720d5e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1435(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1435(a: int, b: int) -> int:\n```", "sample_id": "python_medium_d8228c3c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1918():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1918():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_be3f5a4c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v633):\n for j in range(n_v633):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v633):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_1f47b7da", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1745):\n```", "sample_id": "python_hard_043580b3", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v442):\n```", "sample_id": "python_hard_ffa4af06", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v69():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v69():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_7a169aff", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1508(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1508(first_number, second_number):\n```", "sample_id": "python_easy_28d6c169", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1977(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1977(a: int, b: int) -> int:\n```", "sample_id": "python_medium_18cf28d5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1081):\n```", "sample_id": "python_medium_0d9a1fc6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1536):\n for j in range(n_v1536):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1536):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_7d7c8b42", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1219(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1219(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_822603d8", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v295):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v295):\n if condition:\n break\n```", "sample_id": "python_medium_bd6973bd", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1502():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1502():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_9e3dae2e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v494(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v494(first_number, second_number):\n```", "sample_id": "python_easy_3ba17a03", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v948(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v948(a: int, b: int) -> int:\n```", "sample_id": "python_easy_cf84cd7a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1354):\n for j in range(n_v1354):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1354):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_48178a42", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1626):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1626):\n if condition:\n break\n```", "sample_id": "python_medium_38af67de", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1670(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1670(a: int, b: int) -> int:\n```", "sample_id": "python_hard_939d92b8", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1268():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1268():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_80ec2489", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1268):\n```", "sample_id": "python_hard_cebb82c6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v500(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v500(first_number, second_number):\n```", "sample_id": "python_hard_95722a78", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1031(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1031(a: int, b: int) -> int:\n```", "sample_id": "python_medium_d3c2bcb5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v323(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v323(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_5356cbc9", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_9cfea75d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v428(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v428(first_number, second_number):\n```", "sample_id": "python_hard_22bc61d6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v576):\n```", "sample_id": "python_medium_80de03a2", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1877(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1877(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f6c4fa72", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v350(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v350(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_0b96c83e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v315():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v315():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_041a4b6e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1337):\n```", "sample_id": "python_hard_6b265bfd", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v662(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v662(first_number, second_number):\n```", "sample_id": "python_medium_af039267", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v892():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v892():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_0c9adbe2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1039):\n for j in range(n_v1039):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1039):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_e269e39a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v934):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v934):\n if condition:\n break\n```", "sample_id": "python_medium_89d5f85c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1239(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1239(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_34bdeebe", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v189():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v189():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_ccfcbf03", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1609):\n```", "sample_id": "python_medium_0528a357", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v50(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v50(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_77e1eec8", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1240):\n```", "sample_id": "python_medium_703cf353", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v401():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v401():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_a0304d21", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1810():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1810():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_21def89b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1108():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1108():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_9541488f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1719():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1719():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_771c9fc3", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v984(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v984(a: int, b: int) -> int:\n```", "sample_id": "python_easy_5755a0ef", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v29(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v29(first_number, second_number):\n```", "sample_id": "python_easy_104587a9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v646(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v646(first_number, second_number):\n```", "sample_id": "python_medium_77491bcb", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1418(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1418(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_ff1b3658", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v468):\n for j in range(n_v468):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v468):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_bbf2489e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v399(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v399(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_fa9cc88a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1587(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1587(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_4e3b47f1", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v223(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v223(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_10c3bfe8", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1369):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1369):\n if condition:\n break\n```", "sample_id": "python_hard_e9d6e24b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1897):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1897):\n if condition:\n break\n```", "sample_id": "python_medium_1760c728", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v667(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v667(a: int, b: int) -> int:\n```", "sample_id": "python_medium_ae25f7ec", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v586(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v586(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_b8c6770b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1428(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1428(first_number, second_number):\n```", "sample_id": "python_medium_479dd6e6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_b277e062", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1918(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1918(a: int, b: int) -> int:\n```", "sample_id": "python_hard_2b618673", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v804):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v804):\n if condition:\n break\n```", "sample_id": "python_medium_2346f4b3", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v46(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v46(first_number, second_number):\n```", "sample_id": "python_medium_7a2e6d81", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1719):\n for j in range(n_v1719):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1719):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_93a68858", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v634(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v634(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_be876f9e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v831):\n```", "sample_id": "python_medium_4ce312cb", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v292(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v292(a: int, b: int) -> int:\n```", "sample_id": "python_medium_7c5b323e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1262):\n```", "sample_id": "python_medium_a6e5939a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1388():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1388():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_97481a0b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1444):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1444):\n if condition:\n break\n```", "sample_id": "python_medium_a8c9d41f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1109(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1109(first_number, second_number):\n```", "sample_id": "python_hard_8f23088a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v107():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v107():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_679019e4", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1314):\n for j in range(n_v1314):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1314):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_1016c227", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v71():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v71():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a6ad1755", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1442):\n for j in range(n_v1442):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1442):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_30c8a0f9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1909):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1909):\n if condition:\n break\n```", "sample_id": "python_hard_28986f44", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v517(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v517(a: int, b: int) -> int:\n```", "sample_id": "python_medium_ef95fca1", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1042():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1042():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_6fb0b82b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1639():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1639():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_4bdb86e0", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v553():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v553():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_1e914e7c", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v832(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v832(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_5b7e7352", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v536():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v536():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_8a75a88f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v492():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v492():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_9f6f19bf", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1662(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1662(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_03cfef99", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1539(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1539(first_number, second_number):\n```", "sample_id": "python_hard_a798bd12", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1361):\n for j in range(n_v1361):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1361):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_0a1abdcf", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v787):\n for j in range(n_v787):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v787):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_64ebee8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1589):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1589):\n if condition:\n break\n```", "sample_id": "python_hard_f39ffc41", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1694):\n```", "sample_id": "python_hard_ffcc8075", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v676():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v676():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_5347505f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1346(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1346(first_number, second_number):\n```", "sample_id": "python_easy_5f888c6c", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v672(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v672(first_number, second_number):\n```", "sample_id": "python_medium_87ca4964", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1045):\n for j in range(n_v1045):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1045):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_26b25565", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v579):\n for j in range(n_v579):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v579):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_be73d31e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v364(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v364(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_1ade55a1", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v886():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v886():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_8bd75104", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1447(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1447(first_number, second_number):\n```", "sample_id": "python_medium_f02e1f45", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v149(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v149(first_number, second_number):\n```", "sample_id": "python_easy_8dfbd7be", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1094():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1094():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_21da468d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1163():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1163():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_9c3cd09f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1292(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1292(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_2b73c73a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v556(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v556(first_number, second_number):\n```", "sample_id": "python_medium_fd12e8c4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v255):\n```", "sample_id": "python_medium_b131980f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v699():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v699():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_9dcb0e0d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v242(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v242(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_c3ae06b2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v174():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v174():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_635ae1db", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1058):\n for j in range(n_v1058):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1058):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_43ea8160", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1347(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1347(first_number, second_number):\n```", "sample_id": "python_medium_279e586c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v299(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v299(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_06cb94e3", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1423):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1423):\n if condition:\n break\n```", "sample_id": "python_medium_35b4f477", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v378():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v378():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_ec6f3a71", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v772():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v772():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_10ce0c14", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1461):\n```", "sample_id": "python_medium_844da068", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1363():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1363():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_ba2356dc", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1465(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1465(a: int, b: int) -> int:\n```", "sample_id": "python_easy_8e1a68b7", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v928():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v928():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_e8da6710", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v97():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v97():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_561358e8", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1566():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1566():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_59352521", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1374():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1374():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_f2c2b08d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v387):\n for j in range(n_v387):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v387):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_a86a80f5", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1311():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1311():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_d34bc8f7", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v597):\n for j in range(n_v597):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v597):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_e95adcff", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1837):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1837):\n if condition:\n break\n```", "sample_id": "python_medium_ca1fa91b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v486(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v486(a: int, b: int) -> int:\n```", "sample_id": "python_hard_947844c5", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v962():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v962():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_63e3fcaf", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1172(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1172(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_2b3200b5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v375(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v375(first_number, second_number):\n```", "sample_id": "python_easy_04dddb4d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v562():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v562():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_6c1338a6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1406(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1406(first_number, second_number):\n```", "sample_id": "python_easy_54ec3151", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v806):\n```", "sample_id": "python_hard_b672361b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1515):\n```", "sample_id": "python_medium_53d87113", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1940):\n for j in range(n_v1940):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1940):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d88f5050", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1772(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1772(first_number, second_number):\n```", "sample_id": "python_easy_b5f31c9a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1749):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1749):\n if condition:\n break\n```", "sample_id": "python_hard_7c84e00a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1321):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1321):\n if condition:\n break\n```", "sample_id": "python_medium_6cebf369", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v843(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v843(a: int, b: int) -> int:\n```", "sample_id": "python_easy_06a5bf24", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v326(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v326(a: int, b: int) -> int:\n```", "sample_id": "python_hard_3d7f2f67", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1594():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1594():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_9d35896a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1318):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1318):\n if condition:\n break\n```", "sample_id": "python_hard_a0dbfdf2", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v371(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v371(a: int, b: int) -> int:\n```", "sample_id": "python_hard_e76bce87", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v282):\n for j in range(n_v282):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v282):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_7ce67669", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1105(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1105(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_e5ad2d36", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1115):\n```", "sample_id": "python_hard_0170b318", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v452):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v452):\n if condition:\n break\n```", "sample_id": "python_hard_77839b5e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1679(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1679(a: int, b: int) -> int:\n```", "sample_id": "python_medium_6837dce5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1148(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1148(a: int, b: int) -> int:\n```", "sample_id": "python_medium_c88388f0", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1138():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1138():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_9fcb9f0b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1457(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1457(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_e49fb3d5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1126(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1126(first_number, second_number):\n```", "sample_id": "python_medium_1dc35857", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v799(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v799(a: int, b: int) -> int:\n```", "sample_id": "python_easy_3a6ad89c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1793():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1793():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_bccbe6a2", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1999(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1999(a: int, b: int) -> int:\n```", "sample_id": "python_easy_e386d2a1", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v9):\n```", "sample_id": "python_medium_adad88ec", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1841():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1841():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_00453685", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v640):\n for j in range(n_v640):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v640):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_24b57254", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v857(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v857(a: int, b: int) -> int:\n```", "sample_id": "python_easy_fb7534a7", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1981():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1981():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_03a882b5", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1484():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1484():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_fda564fa", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1974(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1974(first_number, second_number):\n```", "sample_id": "python_hard_20fcaa24", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1200():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1200():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_fd63b120", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v761():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v761():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_dae69d25", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1626(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1626(a: int, b: int) -> int:\n```", "sample_id": "python_easy_5b36beba", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v524):\n for j in range(n_v524):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v524):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_32273ef9", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v419():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v419():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_8e3a40e3", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1446):\n```", "sample_id": "python_hard_3fa5a90e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1946(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1946(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_6e6f3beb", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1868():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1868():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_c9db0b17", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v52):\n```", "sample_id": "python_medium_8e2beb54", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1293):\n for j in range(n_v1293):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1293):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_b7fe0a25", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1335):\n for j in range(n_v1335):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1335):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_1812c01f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1993():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1993():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_15633522", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v272(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v272(first_number, second_number):\n```", "sample_id": "python_medium_0651014d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v601():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v601():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_62c086ba", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v805(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v805(first_number, second_number):\n```", "sample_id": "python_medium_0ce3e800", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v695):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v695):\n if condition:\n break\n```", "sample_id": "python_hard_46864549", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1487():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1487():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_d49c6f3d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1710():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1710():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_828e224f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v853):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v853):\n if condition:\n break\n```", "sample_id": "python_medium_317297f8", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1261(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1261(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_c6c086c1", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1671):\n```", "sample_id": "python_hard_7768ad2a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v529(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v529(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_7067687d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1057(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1057(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_c06992af", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1287(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1287(a: int, b: int) -> int:\n```", "sample_id": "python_medium_18b8ed10", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v157():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v157():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_cf14b61f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1384(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1384(a: int, b: int) -> int:\n```", "sample_id": "python_hard_b0e3ce99", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v383):\n```", "sample_id": "python_hard_2bab94f5", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v22():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v22():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_02f7ff21", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1116():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1116():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_76fe43ac", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1541):\n for j in range(n_v1541):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1541):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_fa8ddefd", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v599():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v599():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_db93174b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1209):\n for j in range(n_v1209):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1209):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_32cba721", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1421(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1421(a: int, b: int) -> int:\n```", "sample_id": "python_medium_cb77db6a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v93():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v93():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_5f7f86d3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v663(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v663(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_6224b45c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v912():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v912():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_ea691494", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v588(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v588(a: int, b: int) -> int:\n```", "sample_id": "python_easy_6b662640", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1045():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1045():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_916530c2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v619):\n```", "sample_id": "python_medium_af0797f9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v625():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v625():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_7aee5e17", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v238(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v238(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_7de20483", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1452():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1452():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_6bb2f32c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v302):\n```", "sample_id": "python_medium_ef9434e1", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1176(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1176(a: int, b: int) -> int:\n```", "sample_id": "python_easy_05c9cfd3", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v210):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v210):\n if condition:\n break\n```", "sample_id": "python_hard_43f0d0a4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1357(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1357(a: int, b: int) -> int:\n```", "sample_id": "python_easy_e2f4def3", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v130():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v130():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_da1c4f11", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1685(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1685(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_4d11f4d7", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v579(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v579(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_4d4aa2cb", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1410):\n```", "sample_id": "python_medium_15dff054", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v574():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v574():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_18afd03a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v920):\n for j in range(n_v920):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v920):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_305f58d1", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v629(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v629(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_7fbd89e2", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v323():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v323():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_de7ecde4", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1010():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1010():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_239e48ee", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v125):\n```", "sample_id": "python_hard_a166a039", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_9cfea75d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v633():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v633():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_bf1bffe0", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1023):\n for j in range(n_v1023):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1023):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_c2d97fe9", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v241():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v241():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_710844b1", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1707(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1707(first_number, second_number):\n```", "sample_id": "python_hard_23ff203d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1705(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1705(first_number, second_number):\n```", "sample_id": "python_medium_0654aa79", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1120):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1120):\n if condition:\n break\n```", "sample_id": "python_hard_0d327d1e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1020(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1020(first_number, second_number):\n```", "sample_id": "python_hard_fdad991d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v405):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v405):\n if condition:\n break\n```", "sample_id": "python_medium_0a798ae5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1943(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1943(a: int, b: int) -> int:\n```", "sample_id": "python_medium_9bc4f88e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1073(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1073(first_number, second_number):\n```", "sample_id": "python_easy_7d1a0466", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v349(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v349(a: int, b: int) -> int:\n```", "sample_id": "python_easy_0fa155f2", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v700():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v700():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_c040157f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v87():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v87():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_87fee9a1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1652(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1652(first_number, second_number):\n```", "sample_id": "python_medium_28041806", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1238):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1238):\n if condition:\n break\n```", "sample_id": "python_medium_a905f01f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1817):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1817):\n if condition:\n break\n```", "sample_id": "python_medium_77b165bf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v88):\n for j in range(n_v88):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v88):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_4977b75c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1017):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1017):\n if condition:\n break\n```", "sample_id": "python_medium_f9327fb0", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v817():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v817():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_8d7f19c6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1467(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1467(first_number, second_number):\n```", "sample_id": "python_medium_522a1050", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v536(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v536(first_number, second_number):\n```", "sample_id": "python_easy_b6680871", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v915():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v915():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_15ea544b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v98(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v98(a: int, b: int) -> int:\n```", "sample_id": "python_easy_8ff49c55", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v389():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v389():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_f3053bff", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v291():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v291():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_7668dd9e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v189):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v189):\n if condition:\n break\n```", "sample_id": "python_medium_e59a87c1", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1560(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1560(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_d18101ce", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1958():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1958():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_8a64be6b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1955():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1955():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_64761c06", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v818):\n for j in range(n_v818):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v818):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_05750b28", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v456(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v456(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_07ef1f52", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1361(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1361(first_number, second_number):\n```", "sample_id": "python_easy_fc530fc4", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1334):\n for j in range(n_v1334):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1334):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_6b9f1d27", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1055(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1055(a: int, b: int) -> int:\n```", "sample_id": "python_easy_6b8715bc", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v800():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v800():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_47605aaf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v730():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v730():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_df999855", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1188(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1188(first_number, second_number):\n```", "sample_id": "python_easy_16349744", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1632):\n```", "sample_id": "python_medium_f679a030", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1643):\n for j in range(n_v1643):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1643):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_31e8a534", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1727(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1727(a: int, b: int) -> int:\n```", "sample_id": "python_hard_3f6a040b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1588(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1588(a: int, b: int) -> int:\n```", "sample_id": "python_easy_844968fc", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1259(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1259(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_985aa35a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1699(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1699(a: int, b: int) -> int:\n```", "sample_id": "python_easy_5d5d6c8c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1463():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1463():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_9992be89", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v797(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v797(first_number, second_number):\n```", "sample_id": "python_hard_9d82c1c0", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1549():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1549():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_768e2420", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v708():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v708():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_26c3a675", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v720):\n```", "sample_id": "python_hard_78c33a16", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v817):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v817):\n if condition:\n break\n```", "sample_id": "python_medium_ca382de0", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1649(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1649(a: int, b: int) -> int:\n```", "sample_id": "python_easy_d5e7bed2", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v24):\n for j in range(n_v24):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v24):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_6d165027", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1847():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1847():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_c3e20f13", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1725):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1725):\n if condition:\n break\n```", "sample_id": "python_medium_a5b3134f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1330(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1330(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_81a626fe", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1616(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1616(a: int, b: int) -> int:\n```", "sample_id": "python_medium_ad530ee4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1684(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1684(a: int, b: int) -> int:\n```", "sample_id": "python_hard_cb96bc3a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1937):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1937):\n if condition:\n break\n```", "sample_id": "python_hard_3a8dc6fd", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v515(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v515(a: int, b: int) -> int:\n```", "sample_id": "python_hard_b9b5eb35", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1937():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1937():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_126447d6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v558():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v558():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_b5578a84", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1079(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1079(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_e6318322", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v584():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v584():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_19c25910", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v840):\n```", "sample_id": "python_hard_4544793e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v815():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v815():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_4edfe877", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1067(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1067(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_155d33e4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v871(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v871(a: int, b: int) -> int:\n```", "sample_id": "python_easy_879e86dd", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1336):\n```", "sample_id": "python_hard_dca4aa0f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1794():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1794():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_6020f846", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1048():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1048():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_65daae1c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1641):\n```", "sample_id": "python_medium_9add28bc", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_9cfea75d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1604(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1604(first_number, second_number):\n```", "sample_id": "python_easy_6d0353ee", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1861():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1861():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_305e784d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v489():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v489():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_c86946cd", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1177(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1177(a: int, b: int) -> int:\n```", "sample_id": "python_easy_0e7488e5", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1972):\n```", "sample_id": "python_hard_6843e724", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v877):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v877):\n if condition:\n break\n```", "sample_id": "python_hard_e88620ba", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v520():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v520():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_24eb51d9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v181):\n for j in range(n_v181):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v181):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_f9e259fe", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v228():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v228():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_4e4a5bf4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1038():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1038():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_aa8c313f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v231):\n for j in range(n_v231):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v231):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ceceb397", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1363(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1363(first_number, second_number):\n```", "sample_id": "python_medium_b06030aa", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v959():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v959():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_177ba022", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v956(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v956(first_number, second_number):\n```", "sample_id": "python_hard_fe1ac7de", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v266):\n for j in range(n_v266):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v266):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_c4f773e5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1633():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1633():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_210ed38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1260(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1260(a: int, b: int) -> int:\n```", "sample_id": "python_easy_eb08ec36", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v810():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v810():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_e04d350e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1598(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1598(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f90422db", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1892(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1892(a: int, b: int) -> int:\n```", "sample_id": "python_medium_556f3802", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1558):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1558):\n if condition:\n break\n```", "sample_id": "python_hard_65749464", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v456():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v456():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_dc039ea4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v696():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v696():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_f83886bf", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v885(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v885(first_number, second_number):\n```", "sample_id": "python_easy_634b92cb", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1687(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1687(first_number, second_number):\n```", "sample_id": "python_medium_9ed6e982", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v662):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v662):\n if condition:\n break\n```", "sample_id": "python_medium_99a4d56c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v436(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v436(first_number, second_number):\n```", "sample_id": "python_hard_3fd1e20d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v759):\n```", "sample_id": "python_medium_e64ad6ac", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v731):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v731):\n if condition:\n break\n```", "sample_id": "python_medium_5bdcf264", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v630(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v630(first_number, second_number):\n```", "sample_id": "python_easy_ae4fd319", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1182():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1182():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_1335343b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v583):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v583):\n if condition:\n break\n```", "sample_id": "python_medium_fd1e4d1e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1283):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1283):\n if condition:\n break\n```", "sample_id": "python_hard_96935f40", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1480(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1480(a: int, b: int) -> int:\n```", "sample_id": "python_easy_772041b8", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1744):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1744):\n if condition:\n break\n```", "sample_id": "python_medium_d5382bdd", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1447():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1447():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_bd21e290", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1385(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1385(a: int, b: int) -> int:\n```", "sample_id": "python_easy_ba882e04", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v670():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v670():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_5cc8eef2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1785(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1785(first_number, second_number):\n```", "sample_id": "python_hard_cf328ebb", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1730(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1730(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_7a040a7d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1289(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1289(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_35bdcb39", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1378(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1378(first_number, second_number):\n```", "sample_id": "python_medium_79d028a8", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v195():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v195():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_78a27276", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1819():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1819():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a8b285cd", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v828):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v828):\n if condition:\n break\n```", "sample_id": "python_medium_6d22cd41", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v139():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v139():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_66e96d11", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v749(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v749(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d588b1ce", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v930):\n for j in range(n_v930):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v930):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_e6aee5be", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1203():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1203():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_7f374d44", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1513):\n```", "sample_id": "python_hard_456260ba", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1755):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1755):\n if condition:\n break\n```", "sample_id": "python_medium_f4839855", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1962(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1962(first_number, second_number):\n```", "sample_id": "python_easy_082840e6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v868):\n```", "sample_id": "python_medium_dd97ceb7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1673():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1673():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_240ccf91", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v829():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v829():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_a7848cdb", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v822):\n```", "sample_id": "python_medium_71a8cb61", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v41():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v41():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_ba392ea2", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v936():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v936():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_2bbee7dc", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1086):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1086):\n if condition:\n break\n```", "sample_id": "python_hard_088a81f4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1963():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1963():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_2f523453", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v774):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v774):\n if condition:\n break\n```", "sample_id": "python_hard_9199b748", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v676(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v676(a: int, b: int) -> int:\n```", "sample_id": "python_hard_d3a590ca", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v59(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v59(first_number, second_number):\n```", "sample_id": "python_medium_f407b378", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1493):\n```", "sample_id": "python_medium_6b663e6f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1372(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1372(a: int, b: int) -> int:\n```", "sample_id": "python_medium_e7b646a1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v331):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v331):\n if condition:\n break\n```", "sample_id": "python_hard_ec2820df", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1785():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1785():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_8083698b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v522(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v522(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_c1dde5d3", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1205(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1205(a: int, b: int) -> int:\n```", "sample_id": "python_medium_6162e840", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1178):\n for j in range(n_v1178):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1178):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_352cd65e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_b277e062", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1226):\n```", "sample_id": "python_medium_454d1797", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v228):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v228):\n if condition:\n break\n```", "sample_id": "python_medium_080d30eb", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v446(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v446(first_number, second_number):\n```", "sample_id": "python_easy_f6a06779", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1233(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1233(first_number, second_number):\n```", "sample_id": "python_medium_a34554a3", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v969(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v969(a: int, b: int) -> int:\n```", "sample_id": "python_hard_a0a98256", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1477(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1477(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_475b0126", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v103(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v103(first_number, second_number):\n```", "sample_id": "python_medium_f57f89fd", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v174():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v174():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_e82bb9ec", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v852():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v852():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_3033c95e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1410():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1410():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_d6662de5", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1697(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1697(first_number, second_number):\n```", "sample_id": "python_medium_944876b8", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v190):\n for j in range(n_v190):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v190):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ef3f9e40", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v953(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v953(first_number, second_number):\n```", "sample_id": "python_medium_2b4712dd", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1996():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1996():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_f682eb88", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v511(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v511(first_number, second_number):\n```", "sample_id": "python_medium_2510adce", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1927():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1927():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_686b691e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1158):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1158):\n if condition:\n break\n```", "sample_id": "python_medium_bf59a069", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v699):\n for j in range(n_v699):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v699):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_40a6092b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1470(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1470(first_number, second_number):\n```", "sample_id": "python_hard_64fd0f8d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1731):\n```", "sample_id": "python_hard_86ad7545", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1184):\n```", "sample_id": "python_hard_d0c36142", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v109):\n for j in range(n_v109):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v109):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_91b6152b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1660(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1660(a: int, b: int) -> int:\n```", "sample_id": "python_easy_8b42baaa", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v75():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v75():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_055fb830", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v207):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v207):\n if condition:\n break\n```", "sample_id": "python_medium_e529e9a5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v467(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v467(a: int, b: int) -> int:\n```", "sample_id": "python_medium_08c05173", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v803):\n```", "sample_id": "python_medium_8ee0054e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1700():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1700():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_c7a87ef1", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v926(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v926(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_0cfa1178", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1872(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1872(a: int, b: int) -> int:\n```", "sample_id": "python_medium_31c5c209", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1224):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1224):\n if condition:\n break\n```", "sample_id": "python_medium_97f58efa", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1496):\n```", "sample_id": "python_hard_0b4a9f37", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1280():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1280():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_58c6871d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v728):\n```", "sample_id": "python_medium_3de42f77", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1832):\n for j in range(n_v1832):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1832):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_8700a894", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v712(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v712(a: int, b: int) -> int:\n```", "sample_id": "python_easy_c4158541", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v902(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v902(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_487e03d4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v17(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v17(a: int, b: int) -> int:\n```", "sample_id": "python_easy_c1ae8b0b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v76(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v76(first_number, second_number):\n```", "sample_id": "python_medium_7b09d0dc", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1137(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1137(first_number, second_number):\n```", "sample_id": "python_medium_4e455565", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1394():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1394():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_472232ef", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v473(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v473(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_3058d63c", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v279():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v279():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_8f70a27a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1032(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1032(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_90ca0167", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v26():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v26():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_0d2c57b0", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v789(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v789(first_number, second_number):\n```", "sample_id": "python_medium_611f17ee", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v515):\n```", "sample_id": "python_hard_4d89c9fb", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1743):\n for j in range(n_v1743):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1743):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_7738da57", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v85():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v85():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_ec86bb85", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v867():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v867():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_9b409116", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v73):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v73):\n if condition:\n break\n```", "sample_id": "python_medium_975af4f5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1747):\n for j in range(n_v1747):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1747):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_a47ba80c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1699):\n for j in range(n_v1699):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1699):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d85c224a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v701():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v701():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_721ec62b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v987(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v987(first_number, second_number):\n```", "sample_id": "python_easy_7c288a84", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v159():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v159():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_15e60780", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1511):\n for j in range(n_v1511):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1511):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d6f64e23", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v841):\n```", "sample_id": "python_medium_ba94820e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v689):\n```", "sample_id": "python_medium_eb2292df", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1257():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1257():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_5e004153", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1149(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1149(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_1a3b28db", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1223():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1223():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_d8dccb07", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1524(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1524(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_b8055ded", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1175(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1175(first_number, second_number):\n```", "sample_id": "python_medium_33ee0e04", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v176(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v176(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_77fdf0a0", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v974):\n```", "sample_id": "python_medium_a7cca887", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v353):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v353):\n if condition:\n break\n```", "sample_id": "python_hard_68f13dfc", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v807():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v807():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_5b4966c9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v403(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v403(first_number, second_number):\n```", "sample_id": "python_hard_1b1fd267", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1822(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1822(first_number, second_number):\n```", "sample_id": "python_medium_8a66c958", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v671():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v671():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_6ba94a09", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1730):\n for j in range(n_v1730):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1730):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_3650801e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v969):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v969):\n if condition:\n break\n```", "sample_id": "python_hard_5191e39c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1847(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1847(a: int, b: int) -> int:\n```", "sample_id": "python_easy_074b734d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v973():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v973():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_86a2fb19", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v890):\n for j in range(n_v890):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v890):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_ec9490cb", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v360(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v360(a: int, b: int) -> int:\n```", "sample_id": "python_hard_8a5e3357", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1420):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1420):\n if condition:\n break\n```", "sample_id": "python_medium_83754a78", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1440():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1440():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_a0085e81", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v977(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v977(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_5bb73b54", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v897):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v897):\n if condition:\n break\n```", "sample_id": "python_medium_6eb01f25", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v632(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v632(first_number, second_number):\n```", "sample_id": "python_medium_ab7f3313", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v100():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v100():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_e2b7287a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v694(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v694(first_number, second_number):\n```", "sample_id": "python_hard_11d3648b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v993):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v993):\n if condition:\n break\n```", "sample_id": "python_hard_4c15b8d4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v578():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v578():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_e3751605", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v747(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v747(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_89540259", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v656():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v656():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_a69e6e75", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1118):\n```", "sample_id": "python_hard_ca1d1354", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v482():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v482():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_171a8f76", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1534(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1534(a: int, b: int) -> int:\n```", "sample_id": "python_hard_f9bf98c8", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v115):\n for j in range(n_v115):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v115):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_0216a9f4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v967(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v967(first_number, second_number):\n```", "sample_id": "python_hard_a587a82c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1064():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1064():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_e9e7cff1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v670():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v670():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_d3769ca3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1037():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1037():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_b1407b47", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1221):\n```", "sample_id": "python_hard_741be67a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v603):\n for j in range(n_v603):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v603):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_3e07820a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1761):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1761):\n if condition:\n break\n```", "sample_id": "python_medium_fe54f8ec", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1003():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1003():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_37ff7040", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v169():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v169():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_92122c00", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v214):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v214):\n if condition:\n break\n```", "sample_id": "python_medium_c953c5af", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v736():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v736():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_9c93d99f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1281):\n```", "sample_id": "python_medium_acc26278", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1386(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1386(first_number, second_number):\n```", "sample_id": "python_hard_968843c0", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v691):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v691):\n if condition:\n break\n```", "sample_id": "python_hard_6dc612b1", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v406():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v406():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_65641b3a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v218():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v218():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_594f3203", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1945):\n for j in range(n_v1945):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1945):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_c30e2b69", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v716):\n for j in range(n_v716):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v716):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_a1e8e900", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v540):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v540):\n if condition:\n break\n```", "sample_id": "python_medium_b416d738", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1323():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1323():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_b52e5281", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v144():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v144():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_e425e374", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1554(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1554(first_number, second_number):\n```", "sample_id": "python_hard_b15018da", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1553):\n```", "sample_id": "python_hard_e3649404", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v229():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v229():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_ce325e0f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v503():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v503():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_2f320fe5", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1771):\n for j in range(n_v1771):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1771):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_50bd417e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v670):\n```", "sample_id": "python_medium_34ca0efb", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1110(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1110(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d4233e10", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1011():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1011():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_3aa31118", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1469():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1469():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_31cf07d7", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1041():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1041():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_0767d2d6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1254():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1254():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_057e157e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v182():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v182():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_bdcdcdbf", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v766():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v766():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_46e28d56", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v840():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v840():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_3ccf4e78", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v49):\n```", "sample_id": "python_medium_4538a20b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1080():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1080():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_8c9a4f5f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v61):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v61):\n if condition:\n break\n```", "sample_id": "python_medium_4ac3d04a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1468):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1468):\n if condition:\n break\n```", "sample_id": "python_medium_1aa1d1db", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1690():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1690():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_c2d2680c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1159):\n for j in range(n_v1159):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1159):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_41030f70", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1246(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1246(first_number, second_number):\n```", "sample_id": "python_easy_540a76b7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1391):\n for j in range(n_v1391):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1391):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_7c67a2b6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1196():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1196():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_affed2b8", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v61():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v61():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_af105806", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v265():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v265():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_b9a3045d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v792):\n for j in range(n_v792):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v792):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_868bf632", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1043):\n```", "sample_id": "python_medium_37d32687", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v633():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v633():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_4fb95475", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v735):\n for j in range(n_v735):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v735):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_0071d872", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1537():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1537():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_a8235889", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v744):\n for j in range(n_v744):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v744):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_19507e45", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v700(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v700(first_number, second_number):\n```", "sample_id": "python_hard_5bbb576f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1142(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1142(a: int, b: int) -> int:\n```", "sample_id": "python_easy_8107b2eb", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v624():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v624():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_f86798ec", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v595():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v595():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_edb4592c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v939):\n for j in range(n_v939):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v939):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d944f4d7", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v306):\n```", "sample_id": "python_medium_c2713a09", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1615):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1615):\n if condition:\n break\n```", "sample_id": "python_hard_7ad40606", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1381():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1381():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_34ef77e1", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v287():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v287():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_b5070b3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1058(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1058(a: int, b: int) -> int:\n```", "sample_id": "python_easy_1e03f1ba", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v739):\n```", "sample_id": "python_medium_c6b1c95f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1766():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1766():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_f4e7c3a3", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1237():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1237():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_f49030c2", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v252(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v252(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_1d98fcb4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1501):\n for j in range(n_v1501):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1501):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_fda82322", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1310):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1310):\n if condition:\n break\n```", "sample_id": "python_hard_0e9a36ff", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v373():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v373():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_541fbce3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v500():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v500():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_1b868bf3", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1124():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1124():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_1e58ac55", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1325(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1325(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_a656f8d4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v958():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v958():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_a932c257", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1624):\n```", "sample_id": "python_medium_b7d4b849", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1619():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1619():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_4954ac23", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v851):\n for j in range(n_v851):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v851):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_2780c853", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1960(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1960(a: int, b: int) -> int:\n```", "sample_id": "python_medium_1ef1d2a0", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1234):\n```", "sample_id": "python_hard_d47f647f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v764():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v764():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_d0e462ab", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1592):\n for j in range(n_v1592):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1592):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_690f971c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1991(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1991(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_ea1ad237", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v660():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v660():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_36d2da63", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v586):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v586):\n if condition:\n break\n```", "sample_id": "python_medium_69340d11", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v510):\n```", "sample_id": "python_hard_a4dba87c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1229():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1229():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_507a8f76", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v407():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v407():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_f91a7bc8", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v801):\n```", "sample_id": "python_hard_cf26b162", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1579():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1579():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_819e1b3c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1468():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1468():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_f34f0d80", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1125():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1125():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_36e4964b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1933(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1933(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_ad23aef4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1260):\n for j in range(n_v1260):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1260):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_c9833e83", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1670):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1670):\n if condition:\n break\n```", "sample_id": "python_hard_28934329", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1970):\n for j in range(n_v1970):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1970):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_5f8ef1fc", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v453):\n for j in range(n_v453):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v453):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_16ac9294", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v788):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v788):\n if condition:\n break\n```", "sample_id": "python_medium_6c3786c0", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1917():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1917():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_58e8cbd1", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v18():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v18():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_10a36768", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1722():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1722():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_62c6dacd", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1377():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1377():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_fd8a32e3", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v654):\n for j in range(n_v654):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v654):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_78df5657", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1824():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1824():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_5212c509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1796(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1796(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_b3264437", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1285):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1285):\n if condition:\n break\n```", "sample_id": "python_medium_c1644916", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1418):\n for j in range(n_v1418):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1418):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_c144d47b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v739():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v739():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_09f53281", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1936():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1936():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_543cd39d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v286):\n```", "sample_id": "python_medium_9d430c61", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v18(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v18(first_number, second_number):\n```", "sample_id": "python_medium_40c05da7", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v574(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v574(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_4da91071", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1839(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1839(a: int, b: int) -> int:\n```", "sample_id": "python_medium_34d36739", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v89):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v89):\n if condition:\n break\n```", "sample_id": "python_hard_50b572cc", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v301():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v301():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_01842701", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v605():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v605():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_e0a7bac8", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1876(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1876(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_9a22fd55", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1543(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1543(first_number, second_number):\n```", "sample_id": "python_medium_36fac507", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v494():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v494():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_5e4c98ab", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v591):\n```", "sample_id": "python_medium_9c44931e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1431(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1431(a: int, b: int) -> int:\n```", "sample_id": "python_easy_d41f2e8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v32(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v32(first_number, second_number):\n```", "sample_id": "python_medium_1b6cccb8", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v245):\n```", "sample_id": "python_medium_d2cc1f14", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v297):\n for j in range(n_v297):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v297):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_e5fe3b93", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v977():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v977():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_2b69bfb2", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v138(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v138(a: int, b: int) -> int:\n```", "sample_id": "python_medium_15d41c02", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v562):\n```", "sample_id": "python_hard_24b1bdba", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v309():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v309():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_66d1044e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1847):\n for j in range(n_v1847):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1847):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_1348c9ee", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1773():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1773():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_0b4c2f9f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1902(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1902(a: int, b: int) -> int:\n```", "sample_id": "python_medium_be2a7cb6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1060():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1060():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_9774611c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1472():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1472():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_8d1f95e1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v765():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v765():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_3e53abb8", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1482):\n for j in range(n_v1482):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1482):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_292cf3ef", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v200(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v200(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_a3be0f41", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v108):\n```", "sample_id": "python_hard_c16f7d99", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1875):\n for j in range(n_v1875):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1875):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_20a71dd1", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v335):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v335):\n if condition:\n break\n```", "sample_id": "python_medium_8c04d448", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v783(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v783(first_number, second_number):\n```", "sample_id": "python_medium_06d18a62", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v224):\n for j in range(n_v224):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v224):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_4a0211c1", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1743():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1743():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_fe396843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1177():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1177():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_7b510aae", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v251(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v251(first_number, second_number):\n```", "sample_id": "python_medium_163d571f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1903):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1903):\n if condition:\n break\n```", "sample_id": "python_medium_598059e7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1748(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1748(first_number, second_number):\n```", "sample_id": "python_easy_da4da70e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1963(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1963(a: int, b: int) -> int:\n```", "sample_id": "python_easy_8d34113a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1407(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1407(a: int, b: int) -> int:\n```", "sample_id": "python_hard_721f019d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v307(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v307(a: int, b: int) -> int:\n```", "sample_id": "python_medium_001fc6a0", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v39(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v39(first_number, second_number):\n```", "sample_id": "python_easy_bb847548", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1505(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1505(a: int, b: int) -> int:\n```", "sample_id": "python_medium_70d97086", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v439(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v439(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_e080692e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v52():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v52():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_2cf90428", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v469():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v469():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_d64d0b92", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v550):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v550):\n if condition:\n break\n```", "sample_id": "python_hard_54672a63", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v207(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v207(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_abc2f7a8", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v752():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v752():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_f63b85e2", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v741():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v741():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_b41de1af", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1195(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1195(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_c2e6a912", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v140(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v140(first_number, second_number):\n```", "sample_id": "python_medium_59518ae3", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1508():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1508():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_36b16bc5", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v398():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v398():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_15caa2a8", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1331):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1331):\n if condition:\n break\n```", "sample_id": "python_medium_d8e14223", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v618):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v618):\n if condition:\n break\n```", "sample_id": "python_hard_30ca0ea4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v690):\n for j in range(n_v690):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v690):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_aab89775", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v146():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v146():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_205e10a9", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v247):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v247):\n if condition:\n break\n```", "sample_id": "python_hard_10ea5297", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1613():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1613():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_33968724", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1398():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1398():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_652bacf1", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v764():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v764():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_6cd3ff3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v794):\n for j in range(n_v794):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v794):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_bdc1665c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v162(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v162(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_41367a25", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1263):\n for j in range(n_v1263):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1263):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_1c1eef04", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1330):\n for j in range(n_v1330):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1330):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_e51dd964", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1301():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1301():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_1a854d59", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v932(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v932(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f16c4261", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1728(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1728(first_number, second_number):\n```", "sample_id": "python_easy_2afdcf61", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v191():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v191():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_ea818454", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v277):\n```", "sample_id": "python_medium_4a937e2d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v639(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v639(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_86027500", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v513():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v513():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_aff82e53", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1640():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1640():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_58cdf7a1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1994):\n```", "sample_id": "python_medium_3b083e32", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1375():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1375():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_2c2b1b2e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v26():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v26():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_d4b91936", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v973):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v973):\n if condition:\n break\n```", "sample_id": "python_hard_16a95d04", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1141):\n for j in range(n_v1141):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1141):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_eef5f59d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1093():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1093():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_eac9a17f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v139():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v139():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_38e02aec", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v112():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v112():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_a2d7fdaa", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1645(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1645(first_number, second_number):\n```", "sample_id": "python_medium_818dba74", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1031():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1031():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_28efb5d8", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1638(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1638(a: int, b: int) -> int:\n```", "sample_id": "python_medium_55471828", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1225():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1225():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_e1419eb7", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v691(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v691(first_number, second_number):\n```", "sample_id": "python_medium_67384257", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1308():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1308():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_fb612bcc", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v549):\n for j in range(n_v549):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v549):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_bcec1136", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1100):\n for j in range(n_v1100):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1100):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_c68f24f2", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v336():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v336():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_af697034", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v419(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v419(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_76e900d5", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v295():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v295():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_1bd2611f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1682):\n```", "sample_id": "python_hard_9c05d81c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v652():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v652():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_62b4114a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1034():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1034():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_9adabaab", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1814):\n for j in range(n_v1814):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1814):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_0fa51406", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v475):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v475):\n if condition:\n break\n```", "sample_id": "python_medium_beaeb032", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1957(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1957(first_number, second_number):\n```", "sample_id": "python_hard_df71e197", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1283():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1283():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5631af09", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v366(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v366(first_number, second_number):\n```", "sample_id": "python_easy_ae595f6f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1948():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1948():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_5066cb16", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v379):\n for j in range(n_v379):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v379):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_2a17e404", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v701):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v701):\n if condition:\n break\n```", "sample_id": "python_hard_9cbcf0cb", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v247(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v247(first_number, second_number):\n```", "sample_id": "python_easy_1ac993e2", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v914():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v914():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a1cf4f91", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v205():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v205():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_67f72cd8", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1340():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1340():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5c7688a2", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1347():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1347():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_ff8cf574", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1071():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1071():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_8409b86c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1162):\n for j in range(n_v1162):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1162):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_1ec10c1b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v722(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v722(a: int, b: int) -> int:\n```", "sample_id": "python_medium_55c79aad", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1382):\n```", "sample_id": "python_medium_8605cf88", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v201(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v201(first_number, second_number):\n```", "sample_id": "python_medium_a446d803", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1179():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1179():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_278280d1", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v361):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v361):\n if condition:\n break\n```", "sample_id": "python_medium_220c98c2", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1599(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1599(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_78ab8cd0", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v168():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v168():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_cb068f37", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1771():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1771():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_81a51971", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1746):\n```", "sample_id": "python_medium_c89418e5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1770():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1770():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_be71b8b7", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v594):\n```", "sample_id": "python_medium_9ac7a71f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1401):\n for j in range(n_v1401):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1401):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_310d4289", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1567(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1567(a: int, b: int) -> int:\n```", "sample_id": "python_hard_5ba5661f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1315):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1315):\n if condition:\n break\n```", "sample_id": "python_hard_d1f1429f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1562):\n for j in range(n_v1562):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1562):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_7e2425e9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v929(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v929(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_faad6e1a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1681(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1681(a: int, b: int) -> int:\n```", "sample_id": "python_easy_6c97e33a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v14(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v14(first_number, second_number):\n```", "sample_id": "python_easy_abe0c5f4", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1714(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1714(first_number, second_number):\n```", "sample_id": "python_easy_c2c950d0", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v236():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v236():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_07c9775b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1517():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1517():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_d7fc1e95", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v240):\n```", "sample_id": "python_medium_f16d0cbf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v551():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v551():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_b048fe55", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1053):\n for j in range(n_v1053):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1053):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_8f6d1693", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v304(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v304(a: int, b: int) -> int:\n```", "sample_id": "python_medium_50dca7e8", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1584():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1584():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_2e46bc9e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1874():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1874():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_2ec3098f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v303):\n for j in range(n_v303):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v303):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_fc583857", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1761():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1761():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_24919e29", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v502(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v502(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_bc0be54e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1894):\n```", "sample_id": "python_medium_8cff8772", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1185():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1185():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_8d4da498", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v114(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v114(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_92dcd786", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v281():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v281():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_7ec4dfc2", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v823):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v823):\n if condition:\n break\n```", "sample_id": "python_medium_f3723c08", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1735(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1735(first_number, second_number):\n```", "sample_id": "python_medium_47651395", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1416(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1416(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_eb0b6097", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v846):\n for j in range(n_v846):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v846):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_05868530", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v763):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v763):\n if condition:\n break\n```", "sample_id": "python_hard_0c4caa59", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1837(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1837(first_number, second_number):\n```", "sample_id": "python_hard_2ba60a8d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1807(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1807(a: int, b: int) -> int:\n```", "sample_id": "python_easy_6c4f005c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v609():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v609():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_772fd4af", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v525():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v525():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_e22634fe", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1542(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1542(a: int, b: int) -> int:\n```", "sample_id": "python_medium_fb32ee90", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v572():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v572():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_c111143e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v136():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v136():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_1675024c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1014):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1014):\n if condition:\n break\n```", "sample_id": "python_medium_89de5b47", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1908):\n```", "sample_id": "python_hard_de899832", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v855():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v855():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_f8b21041", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v718():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v718():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_6b2ad1a8", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1973):\n for j in range(n_v1973):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1973):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_58ca6f6c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1041(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1041(a: int, b: int) -> int:\n```", "sample_id": "python_hard_000d69c5", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1197(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1197(a: int, b: int) -> int:\n```", "sample_id": "python_hard_db089a1c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v60(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v60(first_number, second_number):\n```", "sample_id": "python_medium_65f9301d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v248):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v248):\n if condition:\n break\n```", "sample_id": "python_medium_a1a67d47", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v147(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v147(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_c1ea7ab8", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1640):\n```", "sample_id": "python_medium_97b8fef4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v163():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v163():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_4f82f42f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1374):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1374):\n if condition:\n break\n```", "sample_id": "python_medium_230e2d3c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1048):\n```", "sample_id": "python_hard_ccb38ed5", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v84):\n for j in range(n_v84):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v84):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_81c8e9ed", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1365(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1365(first_number, second_number):\n```", "sample_id": "python_easy_5c6795f6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1351():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1351():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_84616a01", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1865):\n for j in range(n_v1865):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1865):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_0ca4a01a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1614():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1614():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_6281acc9", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v190(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v190(a: int, b: int) -> int:\n```", "sample_id": "python_easy_699d278a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1306(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1306(first_number, second_number):\n```", "sample_id": "python_hard_0d81d087", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v947():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v947():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_ede11a0c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v314):\n for j in range(n_v314):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v314):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_f5d68de1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v292):\n```", "sample_id": "python_hard_a01003c6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v226(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v226(a: int, b: int) -> int:\n```", "sample_id": "python_medium_52b6c6c2", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v825():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v825():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_3dd3d574", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1474():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1474():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_8340c708", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v504):\n```", "sample_id": "python_hard_904d4fdf", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v69):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v69):\n if condition:\n break\n```", "sample_id": "python_medium_0ef32917", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v202():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v202():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_bb34c5ac", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1562():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1562():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_776fd8d7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_d5b7f2b1", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v842):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v842):\n if condition:\n break\n```", "sample_id": "python_medium_bf0a37dc", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v865():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v865():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_c1ed6509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1826(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1826(a: int, b: int) -> int:\n```", "sample_id": "python_medium_d5ed0e2e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1507():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1507():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_503a87d8", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v706):\n```", "sample_id": "python_medium_cd0339d9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v609(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v609(a: int, b: int) -> int:\n```", "sample_id": "python_hard_2da9b656", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1017(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1017(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_b1000771", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1001):\n```", "sample_id": "python_medium_45cc15c0", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1709):\n for j in range(n_v1709):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1709):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_8388dd6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1027):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1027):\n if condition:\n break\n```", "sample_id": "python_medium_20a2ef91", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1976):\n for j in range(n_v1976):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1976):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_170c99ff", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1724):\n for j in range(n_v1724):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1724):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_a3fad7b2", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v468(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v468(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_6388a84a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1166(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1166(first_number, second_number):\n```", "sample_id": "python_hard_3cb465aa", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v930():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v930():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_cf1e380d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1413):\n for j in range(n_v1413):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1413):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_93756832", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1884):\n for j in range(n_v1884):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1884):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_1d216a13", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v520():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v520():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_801a17bf", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1551(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1551(a: int, b: int) -> int:\n```", "sample_id": "python_medium_613f4e28", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1869(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1869(a: int, b: int) -> int:\n```", "sample_id": "python_easy_829abefc", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_819ae0ca", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1077):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1077):\n if condition:\n break\n```", "sample_id": "python_hard_90f08e93", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1707():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1707():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_592eeb5f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1273(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1273(first_number, second_number):\n```", "sample_id": "python_medium_40d50714", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v370():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v370():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_74484a3d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1480):\n for j in range(n_v1480):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1480):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_7a11516d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v914):\n```", "sample_id": "python_medium_fcb820c8", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1411():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1411():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_335087ff", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v42():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v42():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_41391913", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1210():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1210():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_0298faf4", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1101(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1101(a: int, b: int) -> int:\n```", "sample_id": "python_hard_7b988bfd", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v592():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v592():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_713f3036", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v14():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v14():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_85880871", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1574):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1574):\n if condition:\n break\n```", "sample_id": "python_hard_70d9bb0e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v761):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v761):\n if condition:\n break\n```", "sample_id": "python_medium_d3045c48", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v838):\n```", "sample_id": "python_hard_eaf910ce", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v650(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v650(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_ca43a006", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1867(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1867(a: int, b: int) -> int:\n```", "sample_id": "python_hard_589275bc", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1420():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1420():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_d1ef17ec", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1393():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1393():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_ebe0c0f6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1750(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1750(first_number, second_number):\n```", "sample_id": "python_hard_10c0dff9", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1906):\n for j in range(n_v1906):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1906):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d069ab0c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1138():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1138():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_88f220bd", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v166():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v166():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_ad17d7bf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1638():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1638():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_bb413781", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v408):\n for j in range(n_v408):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v408):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_244e036d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1858):\n for j in range(n_v1858):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1858):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_1c23dfc4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1574(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1574(first_number, second_number):\n```", "sample_id": "python_hard_0fbaf6a7", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v557():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v557():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_35245ffd", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v547):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v547):\n if condition:\n break\n```", "sample_id": "python_medium_854400f6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v346):\n for j in range(n_v346):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v346):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_15c8ea19", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v307():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v307():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_f1981d80", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1511(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1511(a: int, b: int) -> int:\n```", "sample_id": "python_medium_f6ca711c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1831):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1831):\n if condition:\n break\n```", "sample_id": "python_medium_a2c21b12", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v934():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v934():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_65b84aff", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1452):\n for j in range(n_v1452):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1452):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_82514734", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v105(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v105(a: int, b: int) -> int:\n```", "sample_id": "python_medium_97f1a26f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1404):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1404):\n if condition:\n break\n```", "sample_id": "python_hard_22ca58c0", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1398(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1398(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f8fa1467", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v450():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v450():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_39434406", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v433():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v433():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_838148d7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1579):\n```", "sample_id": "python_medium_96b2bf77", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v817(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v817(first_number, second_number):\n```", "sample_id": "python_hard_54486256", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v117(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v117(first_number, second_number):\n```", "sample_id": "python_medium_ad499630", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v417():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v417():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_f7daa7d9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1176):\n for j in range(n_v1176):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1176):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_98791b55", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1026(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1026(first_number, second_number):\n```", "sample_id": "python_hard_5ff8391c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1753):\n for j in range(n_v1753):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1753):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_52725704", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v860():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v860():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_673f363a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v526():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v526():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_e9343d39", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v66):\n```", "sample_id": "python_hard_256812ff", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1097):\n```", "sample_id": "python_medium_3871bcce", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1936():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1936():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_6aeb076d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v571(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v571(a: int, b: int) -> int:\n```", "sample_id": "python_hard_d14cf60f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v116():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v116():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_0cdacb98", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1520():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1520():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_200fa547", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v584):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v584):\n if condition:\n break\n```", "sample_id": "python_medium_db49f8d3", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v63():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v63():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_97158f93", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v911():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v911():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_f9a0c245", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1196(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1196(first_number, second_number):\n```", "sample_id": "python_medium_78ef352c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v888():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v888():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_c7d9d518", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1746():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1746():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_ecdd12cd", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v806():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v806():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_ff4c0418", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1983):\n for j in range(n_v1983):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1983):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_f6192352", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v765(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v765(a: int, b: int) -> int:\n```", "sample_id": "python_easy_699de90b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v476):\n```", "sample_id": "python_hard_a82304c4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1178():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1178():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_70d4541e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v106):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v106):\n if condition:\n break\n```", "sample_id": "python_medium_a7966a63", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v770):\n for j in range(n_v770):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v770):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_8ea14db4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1240(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1240(first_number, second_number):\n```", "sample_id": "python_easy_fa5d43bb", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v530(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v530(a: int, b: int) -> int:\n```", "sample_id": "python_medium_1a2f3ce6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v321():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v321():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_a7a3bbf3", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1255):\n```", "sample_id": "python_hard_783c5422", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v87):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v87):\n if condition:\n break\n```", "sample_id": "python_hard_1e0c3379", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1974():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1974():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_ea1896fb", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1352):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1352):\n if condition:\n break\n```", "sample_id": "python_hard_15564b4c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1052(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1052(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_0b820bc5", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1294):\n for j in range(n_v1294):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1294):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_76b650d7", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v483():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v483():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_294e271f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1579():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1579():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_0214a19e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v954):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v954):\n if condition:\n break\n```", "sample_id": "python_medium_6a69572f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v54):\n```", "sample_id": "python_hard_433ecb8c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v332(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v332(a: int, b: int) -> int:\n```", "sample_id": "python_medium_df32f42a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1778():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1778():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a3fa1265", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v136(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v136(a: int, b: int) -> int:\n```", "sample_id": "python_hard_63ead393", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1838):\n```", "sample_id": "python_medium_3dc8bb32", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v755):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v755):\n if condition:\n break\n```", "sample_id": "python_hard_865deabf", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1407():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1407():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_be84d267", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v109():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v109():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_910b834a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1349():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1349():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_413f9605", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1840():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1840():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_05bb2e1b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1297):\n for j in range(n_v1297):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1297):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_562f6523", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1514):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1514):\n if condition:\n break\n```", "sample_id": "python_medium_923f69f6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1803():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1803():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_f7dfb122", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v959(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v959(first_number, second_number):\n```", "sample_id": "python_medium_af225f2a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v346():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v346():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_3eaf0b60", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v657):\n for j in range(n_v657):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v657):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_012e3c7e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v620():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v620():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_042f5edd", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1863):\n for j in range(n_v1863):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1863):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_771fc6a5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v795(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v795(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_f5ab7f66", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1000):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1000):\n if condition:\n break\n```", "sample_id": "python_hard_95d9e30a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1632():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1632():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_2be7c1d4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v259):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v259):\n if condition:\n break\n```", "sample_id": "python_medium_99a5166b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v489(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v489(first_number, second_number):\n```", "sample_id": "python_medium_7546f1ca", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1149():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1149():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_ea20f4ad", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v222():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v222():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_6a1f7845", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1867():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1867():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_a659c0db", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1070(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1070(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_16fa9e3e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1026():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1026():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_099190d9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1658(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1658(a: int, b: int) -> int:\n```", "sample_id": "python_medium_374133d1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1407):\n for j in range(n_v1407):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1407):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_aae475b2", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1158():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1158():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_318bec5e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1615():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1615():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_576be1ed", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1986):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1986):\n if condition:\n break\n```", "sample_id": "python_hard_fad0967e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1863():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1863():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_6a3731dd", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v820):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v820):\n if condition:\n break\n```", "sample_id": "python_hard_933ef8e2", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v608(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v608(a: int, b: int) -> int:\n```", "sample_id": "python_hard_70ac0e42", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1581(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1581(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_2edfc10e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v654(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v654(a: int, b: int) -> int:\n```", "sample_id": "python_hard_f164e731", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1790):\n```", "sample_id": "python_hard_514a5200", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v197):\n```", "sample_id": "python_medium_9eafce50", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v391):\n for j in range(n_v391):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v391):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_59df680f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1076):\n```", "sample_id": "python_hard_e8009b1b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v82(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v82(a: int, b: int) -> int:\n```", "sample_id": "python_medium_3e77e6e3", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1923():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1923():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_feb1a436", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1294(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1294(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d9cf5930", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v423(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v423(first_number, second_number):\n```", "sample_id": "python_medium_0d914698", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v190():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v190():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_17625067", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1206(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1206(first_number, second_number):\n```", "sample_id": "python_easy_902e69b7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v133):\n for j in range(n_v133):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v133):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d79a4de9", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1208(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1208(first_number, second_number):\n```", "sample_id": "python_hard_b69eea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1397(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1397(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_36015b91", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v587(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v587(a: int, b: int) -> int:\n```", "sample_id": "python_easy_14e55fc3", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1052):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1052):\n if condition:\n break\n```", "sample_id": "python_hard_cc72e0f2", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1036():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1036():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_9cd38718", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1754(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1754(first_number, second_number):\n```", "sample_id": "python_easy_179dab1a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v831():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v831():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_89034119", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v10(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v10(first_number, second_number):\n```", "sample_id": "python_medium_6cac5387", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v303():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v303():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_4d05513b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v293):\n for j in range(n_v293):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v293):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_33913986", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1700):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1700):\n if condition:\n break\n```", "sample_id": "python_medium_a1e39bb3", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1011):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1011):\n if condition:\n break\n```", "sample_id": "python_medium_44b552d5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1296):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1296):\n if condition:\n break\n```", "sample_id": "python_medium_56ec9084", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v754():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v754():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_97f3440b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1217():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1217():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_250faf12", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v638):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v638):\n if condition:\n break\n```", "sample_id": "python_medium_d5f194cf", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1042):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1042):\n if condition:\n break\n```", "sample_id": "python_medium_330561b3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1090(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1090(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_87404553", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1021):\n for j in range(n_v1021):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1021):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_87b96c05", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1532():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1532():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_018af5a1", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1238(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1238(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_a51a256f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1473):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1473):\n if condition:\n break\n```", "sample_id": "python_medium_e3b41f24", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v74():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v74():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_e9c9a893", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v907):\n```", "sample_id": "python_medium_83a85fce", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1901):\n for j in range(n_v1901):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1901):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_662b7287", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1738(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1738(first_number, second_number):\n```", "sample_id": "python_hard_a57cb11e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1199():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1199():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_c34d63e8", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v254):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v254):\n if condition:\n break\n```", "sample_id": "python_medium_2f89dbce", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v274():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v274():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_2b0ecfe0", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v568):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v568):\n if condition:\n break\n```", "sample_id": "python_hard_06ca8872", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v782(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v782(a: int, b: int) -> int:\n```", "sample_id": "python_medium_e655db20", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1922(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1922(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_6bac2e10", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1168():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1168():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_2ac78647", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1596(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1596(a: int, b: int) -> int:\n```", "sample_id": "python_hard_f059aade", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v431):\n for j in range(n_v431):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v431):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_7b7da009", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1213):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1213):\n if condition:\n break\n```", "sample_id": "python_medium_e465a054", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1838(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1838(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_c2bea7d3", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1364(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1364(first_number, second_number):\n```", "sample_id": "python_medium_52ed81af", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v300):\n for j in range(n_v300):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v300):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_fc7214d5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1585):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1585):\n if condition:\n break\n```", "sample_id": "python_medium_eb0efa1b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v440):\n for j in range(n_v440):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v440):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_12990f29", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v315):\n for j in range(n_v315):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v315):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_a82a5eeb", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v567(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v567(first_number, second_number):\n```", "sample_id": "python_hard_4867cc22", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v951):\n```", "sample_id": "python_hard_ae4000a9", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v310():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v310():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_8df3b69a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v314(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v314(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_f382a6e3", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v787():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v787():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_c7f31499", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v972):\n for j in range(n_v972):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v972):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e9e88d0f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v928):\n```", "sample_id": "python_hard_aa92b649", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v187(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v187(a: int, b: int) -> int:\n```", "sample_id": "python_medium_ca65a681", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1234():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1234():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_cd95100e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v626(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v626(a: int, b: int) -> int:\n```", "sample_id": "python_easy_50cac630", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v232():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v232():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_ca1d126d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v51():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v51():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_f2416797", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v308(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v308(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_871d9e2f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v548(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v548(a: int, b: int) -> int:\n```", "sample_id": "python_medium_e0ef303d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v811(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v811(a: int, b: int) -> int:\n```", "sample_id": "python_medium_b456b62c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v968():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v968():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_eccd37f3", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v218(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v218(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_0e8b4198", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1392):\n for j in range(n_v1392):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1392):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_479ad074", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v100(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v100(a: int, b: int) -> int:\n```", "sample_id": "python_hard_64c5b5d3", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v964):\n```", "sample_id": "python_hard_5ff6a9c4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1937(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1937(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_956b184d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1111(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1111(first_number, second_number):\n```", "sample_id": "python_medium_7f1cfc94", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v181(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v181(a: int, b: int) -> int:\n```", "sample_id": "python_medium_c10b9a51", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1951):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1951):\n if condition:\n break\n```", "sample_id": "python_hard_79e13447", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v275():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v275():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_c30c7282", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v998():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v998():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_d56fbbac", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1653(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1653(a: int, b: int) -> int:\n```", "sample_id": "python_medium_d585b2df", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v666):\n```", "sample_id": "python_medium_07d114ea", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v6():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v6():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_c1ddd235", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v221):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v221):\n if condition:\n break\n```", "sample_id": "python_medium_834373a0", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v737():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v737():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_937ff19a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1295):\n```", "sample_id": "python_medium_9fcfb7e9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1978):\n```", "sample_id": "python_hard_41eec8d9", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1373():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1373():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_6961fc18", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v699(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v699(a: int, b: int) -> int:\n```", "sample_id": "python_medium_48fbff4a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_a51375cc", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v874(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v874(first_number, second_number):\n```", "sample_id": "python_easy_cecbf223", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1150():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1150():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_fe8817a5", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1840():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1840():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_7468c5f5", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1512):\n```", "sample_id": "python_medium_17e060c4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v913():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v913():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_26c0c6d8", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v124):\n```", "sample_id": "python_medium_9d01e5ba", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1811(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1811(a: int, b: int) -> int:\n```", "sample_id": "python_easy_b356eb00", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1758(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1758(first_number, second_number):\n```", "sample_id": "python_easy_55b0f8a2", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v664():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v664():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_36d114d5", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1787(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1787(a: int, b: int) -> int:\n```", "sample_id": "python_easy_ca692378", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1148():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1148():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_306c8a7e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1620(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1620(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_75307043", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1311):\n```", "sample_id": "python_medium_c7711054", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v667):\n```", "sample_id": "python_medium_96264d65", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v896(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v896(first_number, second_number):\n```", "sample_id": "python_hard_db97d81f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v852):\n for j in range(n_v852):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v852):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_3bc0908a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1378):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1378):\n if condition:\n break\n```", "sample_id": "python_medium_f86867fb", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v796):\n for j in range(n_v796):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v796):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_27aab083", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1413(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1413(a: int, b: int) -> int:\n```", "sample_id": "python_hard_213d067e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v226):\n```", "sample_id": "python_medium_3dffad05", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v405():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v405():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_b6bdc5f5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1494):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1494):\n if condition:\n break\n```", "sample_id": "python_hard_989b7d79", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v209():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v209():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_5bb48c5a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1167(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1167(a: int, b: int) -> int:\n```", "sample_id": "python_hard_bd6d474a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v791(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v791(first_number, second_number):\n```", "sample_id": "python_hard_347d77a9", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v21():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v21():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_2e0571a4", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v433):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v433):\n if condition:\n break\n```", "sample_id": "python_hard_07f24f0f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v765):\n for j in range(n_v765):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v765):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e7f9e81b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v814):\n```", "sample_id": "python_medium_6f33d873", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1961(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1961(a: int, b: int) -> int:\n```", "sample_id": "python_easy_86b08ff4", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1635(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1635(a: int, b: int) -> int:\n```", "sample_id": "python_easy_2d8e3c91", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v78():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v78():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_1f984ce5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1692():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1692():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_834df85f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1484(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1484(first_number, second_number):\n```", "sample_id": "python_easy_fec59cb0", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1082():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1082():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5de5d156", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v512):\n for j in range(n_v512):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v512):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_2d7dfa2b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1862():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1862():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_f28d0a3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v261():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v261():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_11155d74", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v978():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v978():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_8e73e63a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v603():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v603():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_cea4f0fb", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1198(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1198(first_number, second_number):\n```", "sample_id": "python_medium_418674f0", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1092():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1092():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_42f0c40a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1163(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1163(first_number, second_number):\n```", "sample_id": "python_medium_e0e33472", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1350(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1350(first_number, second_number):\n```", "sample_id": "python_easy_f449a038", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v56():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v56():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a8f2eeb7", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1066():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1066():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_178f2e35", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1897(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1897(a: int, b: int) -> int:\n```", "sample_id": "python_hard_056986af", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v2(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v2(first_number, second_number):\n```", "sample_id": "python_easy_3ae720aa", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1336(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1336(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_8ae9e0b0", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v89(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v89(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_ce4c463a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1487(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1487(a: int, b: int) -> int:\n```", "sample_id": "python_hard_be7af974", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v637):\n```", "sample_id": "python_hard_502e31e7", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v430):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v430):\n if condition:\n break\n```", "sample_id": "python_hard_7eb902bb", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1040(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1040(first_number, second_number):\n```", "sample_id": "python_medium_c8470a59", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v532(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v532(a: int, b: int) -> int:\n```", "sample_id": "python_medium_29985e2d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v552(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v552(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_e75bf7e4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v27):\n for j in range(n_v27):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v27):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d2a0ad73", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v124():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v124():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_ce4d9756", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1637(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1637(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f02eb568", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v664):\n for j in range(n_v664):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v664):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_282bda73", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v677():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v677():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_eeb215c9", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v150):\n```", "sample_id": "python_medium_3ff8e961", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1911):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1911):\n if condition:\n break\n```", "sample_id": "python_hard_c219bf4a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1440):\n```", "sample_id": "python_hard_fdd98df2", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1948(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1948(a: int, b: int) -> int:\n```", "sample_id": "python_hard_8975d102", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1895):\n for j in range(n_v1895):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1895):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_19f17d65", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v872():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v872():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_e981440f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1699():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1699():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_ef9285a7", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1316):\n```", "sample_id": "python_hard_72bd7b20", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1219():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1219():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_4bbc4a5c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v922(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v922(first_number, second_number):\n```", "sample_id": "python_medium_2be770d3", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v927(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v927(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_655dd070", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1198():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1198():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_902a5f42", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1192(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1192(a: int, b: int) -> int:\n```", "sample_id": "python_hard_b1f9cca4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v566():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v566():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_988002dc", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1099):\n for j in range(n_v1099):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1099):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ac056603", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v339():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v339():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_0232626f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v128():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v128():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_083155b6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1488):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1488):\n if condition:\n break\n```", "sample_id": "python_medium_4835e735", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v40):\n for j in range(n_v40):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v40):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ee6785ef", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1900(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1900(a: int, b: int) -> int:\n```", "sample_id": "python_easy_d921d8d8", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_625692f9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1104):\n for j in range(n_v1104):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1104):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_4056039a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v537):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v537):\n if condition:\n break\n```", "sample_id": "python_hard_9d96f2ba", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1155(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1155(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_87f26175", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1606():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1606():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_d751c800", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v690():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v690():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_956a53b2", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v241():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v241():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_c95133dd", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1306():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1306():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_e181323c", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v35():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v35():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_6c597804", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v201):\n for j in range(n_v201):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v201):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_78bfcb0e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1495):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1495):\n if condition:\n break\n```", "sample_id": "python_medium_26d4604a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1350):\n```", "sample_id": "python_hard_66bf302a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v364):\n```", "sample_id": "python_medium_fe0e6bff", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1890():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1890():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_f1045a1f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v546():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v546():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_48e981f4", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v612):\n for j in range(n_v612):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v612):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_5e87842c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v681):\n```", "sample_id": "python_hard_677b9281", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v453(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v453(a: int, b: int) -> int:\n```", "sample_id": "python_medium_8d648bb0", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1784():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1784():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_92f3afea", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1253):\n```", "sample_id": "python_hard_edfb82f0", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1478():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1478():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_d6706fba", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v65(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v65(a: int, b: int) -> int:\n```", "sample_id": "python_easy_0c268f2e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1825):\n```", "sample_id": "python_medium_5b1e8c26", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v851(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v851(first_number, second_number):\n```", "sample_id": "python_hard_699ea52f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v493(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v493(first_number, second_number):\n```", "sample_id": "python_easy_d7112cbf", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v541():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v541():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_4d7b0d82", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1362():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1362():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_d423e268", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v563):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v563):\n if condition:\n break\n```", "sample_id": "python_medium_0af32780", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v534):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v534):\n if condition:\n break\n```", "sample_id": "python_hard_f18e1861", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1135(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1135(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_3d218319", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1263():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1263():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_53a17c16", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v698):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v698):\n if condition:\n break\n```", "sample_id": "python_medium_4f9d1274", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v745():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v745():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_f12238d2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v52():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v52():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_e8d14555", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v461(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v461(first_number, second_number):\n```", "sample_id": "python_easy_71c2ca9e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v310(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v310(a: int, b: int) -> int:\n```", "sample_id": "python_medium_3f923c9b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1616):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1616):\n if condition:\n break\n```", "sample_id": "python_medium_ea58ba32", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1631():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1631():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_78c48296", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1910():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1910():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5b6dcb48", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v923():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v923():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_6581eff1", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1436():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1436():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_4dec9dee", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1376(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1376(a: int, b: int) -> int:\n```", "sample_id": "python_medium_4da291c4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v785():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v785():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_17de1554", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v708):\n```", "sample_id": "python_hard_8f8ac660", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v401(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v401(first_number, second_number):\n```", "sample_id": "python_medium_b52879eb", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v599():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v599():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_c4ede0bc", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v440(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v440(first_number, second_number):\n```", "sample_id": "python_hard_552e3aa5", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1271):\n for j in range(n_v1271):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1271):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_8a7597a4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1680():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1680():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_549047b1", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1490(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1490(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_07002a14", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v955():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v955():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_5ac59d5f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v276():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v276():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_0e67f62c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1915(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1915(first_number, second_number):\n```", "sample_id": "python_medium_42237359", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v0(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v0(a: int, b: int) -> int:\n```", "sample_id": "python_hard_ed627ab8", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v424():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v424():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_6d1e8ad5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v459():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v459():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_50cae93d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1554):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1554):\n if condition:\n break\n```", "sample_id": "python_hard_da124530", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v738):\n```", "sample_id": "python_medium_936f849a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1004):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1004):\n if condition:\n break\n```", "sample_id": "python_medium_ad7fd95b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v739(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v739(a: int, b: int) -> int:\n```", "sample_id": "python_easy_ed8e077a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1594(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1594(first_number, second_number):\n```", "sample_id": "python_medium_e9d7002a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v933(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v933(a: int, b: int) -> int:\n```", "sample_id": "python_easy_fcb106c6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1433():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1433():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_44731487", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1003():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1003():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_664e87ba", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_0946810e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v466(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v466(first_number, second_number):\n```", "sample_id": "python_easy_bb9f3e2f", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v93():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v93():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_351512c9", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1313():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1313():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_ad4a92c4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v623():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v623():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_80462dff", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v996(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v996(a: int, b: int) -> int:\n```", "sample_id": "python_easy_d2ee3856", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1075(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1075(a: int, b: int) -> int:\n```", "sample_id": "python_medium_ac981bc8", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1669(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1669(first_number, second_number):\n```", "sample_id": "python_medium_4e7d47fb", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v377(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v377(a: int, b: int) -> int:\n```", "sample_id": "python_hard_48413fcf", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1804():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1804():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_dd0419af", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1724(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1724(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_e0eba59f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v964(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v964(a: int, b: int) -> int:\n```", "sample_id": "python_hard_4fb2879e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v523):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v523):\n if condition:\n break\n```", "sample_id": "python_medium_a6bdcb6a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v445():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v445():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_331c7f4c", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1242():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1242():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_50fb1458", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1616():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1616():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_679c8404", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1813():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1813():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_11f274de", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1303(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1303(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_e1102779", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1429):\n for j in range(n_v1429):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1429):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_30ba314a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v42):\n```", "sample_id": "python_hard_5c498803", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_b277e062", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1872():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1872():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_c135525d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1642):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1642):\n if condition:\n break\n```", "sample_id": "python_medium_651b26cd", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1461(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1461(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_5b344906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1124():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1124():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_7f1ea854", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1053(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1053(a: int, b: int) -> int:\n```", "sample_id": "python_medium_19c62c30", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1950):\n```", "sample_id": "python_hard_5b22b12c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1566):\n```", "sample_id": "python_hard_ca2feb3d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v897(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v897(first_number, second_number):\n```", "sample_id": "python_medium_d7e82cdb", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1825(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1825(a: int, b: int) -> int:\n```", "sample_id": "python_hard_5a3d92a9", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1968):\n for j in range(n_v1968):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1968):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_3f2ab190", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1254():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1254():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_c15128dd", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v823(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v823(first_number, second_number):\n```", "sample_id": "python_medium_06410c4b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v49(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v49(first_number, second_number):\n```", "sample_id": "python_hard_70d281bf", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v847(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v847(first_number, second_number):\n```", "sample_id": "python_hard_c48a097b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v647):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v647):\n if condition:\n break\n```", "sample_id": "python_hard_121d3d61", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v22):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v22):\n if condition:\n break\n```", "sample_id": "python_medium_1f3eaf18", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v850():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v850():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_1d4f9685", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1136(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1136(first_number, second_number):\n```", "sample_id": "python_hard_27a270f3", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v465():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v465():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_14eaff27", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1858(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1858(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_45fb0572", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1095():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1095():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_68577809", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1335(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1335(first_number, second_number):\n```", "sample_id": "python_easy_df0a166b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v484():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v484():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_3b28e064", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1079():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1079():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_43e1dc58", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v389):\n```", "sample_id": "python_hard_e94b7a8b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1098():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1098():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_be7bebb3", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v371):\n for j in range(n_v371):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v371):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_1d53af3e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v979(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v979(a: int, b: int) -> int:\n```", "sample_id": "python_hard_5af73362", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v103):\n for j in range(n_v103):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v103):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_3d0a40aa", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v439():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v439():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_527853bc", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v382():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v382():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_7668b746", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v234(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v234(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_52d542ad", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1965():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1965():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_1b5a6a11", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1969):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1969):\n if condition:\n break\n```", "sample_id": "python_hard_6b23deec", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1639():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1639():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_de346dc1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v360():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v360():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_e4ca43e1", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1028(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1028(a: int, b: int) -> int:\n```", "sample_id": "python_easy_ab8c84e7", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1035(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1035(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_9f3378f7", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1701):\n for j in range(n_v1701):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1701):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_dbf90d7e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1932):\n```", "sample_id": "python_hard_fccac643", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v329(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v329(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_ef728fdf", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v137(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v137(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_be59afbd", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v564():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v564():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_5bc79de5", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1009(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1009(a: int, b: int) -> int:\n```", "sample_id": "python_hard_a314991f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v515():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v515():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_c0dfeef8", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1600(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1600(first_number, second_number):\n```", "sample_id": "python_medium_936cbbd5", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v704(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v704(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_3b43e3f2", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v370(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v370(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_b9b2db67", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v271):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v271):\n if condition:\n break\n```", "sample_id": "python_hard_79650e8d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_4497e4c9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v134(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v134(a: int, b: int) -> int:\n```", "sample_id": "python_easy_19607ebd", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v177():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v177():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_6ad7c974", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_4790b0e9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v341(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v341(first_number, second_number):\n```", "sample_id": "python_easy_d9446a78", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v914():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v914():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_116d7bad", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1989(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1989(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_3a41e09d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1993():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1993():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_33f68888", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1247(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1247(first_number, second_number):\n```", "sample_id": "python_easy_4588fc38", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v484):\n```", "sample_id": "python_medium_f51e0262", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1193(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1193(a: int, b: int) -> int:\n```", "sample_id": "python_hard_f7b49eaa", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v925():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v925():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_56011888", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v296):\n```", "sample_id": "python_hard_907e7d61", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v142():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v142():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_99fafb1e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v329):\n```", "sample_id": "python_hard_6a18aaf8", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1522):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1522):\n if condition:\n break\n```", "sample_id": "python_hard_103b1f01", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v180(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v180(first_number, second_number):\n```", "sample_id": "python_medium_7ad5b412", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1879(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1879(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_a24eda5c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1434():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1434():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_1e5c5f3a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1844():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1844():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_a1041262", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v185(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v185(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_56981477", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1677):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1677):\n if condition:\n break\n```", "sample_id": "python_medium_60e1a269", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1857):\n for j in range(n_v1857):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1857):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_c017dd57", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1991():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1991():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_7e7a0d27", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1573):\n```", "sample_id": "python_hard_8cc9f3d5", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v658(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v658(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_3661ed20", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1708():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1708():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_836c3eeb", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v351():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v351():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_5cadc15f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1074(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1074(first_number, second_number):\n```", "sample_id": "python_medium_714dae8d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v298):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v298):\n if condition:\n break\n```", "sample_id": "python_hard_c55179ae", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1450():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1450():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_2b849512", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v477(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v477(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_4fbd8f62", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v715():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v715():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_585fecf5", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1751():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1751():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_2566d0b4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_c0fdeaee", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v936):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v936):\n if condition:\n break\n```", "sample_id": "python_medium_f7705558", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_9cfea75d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v328():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v328():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_fe188a4c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v694():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v694():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_f036bc21", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1454():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1454():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_f55cba2b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1179):\n for j in range(n_v1179):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1179):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_c0fc5167", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1223):\n for j in range(n_v1223):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1223):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_9f50ff5e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1003):\n for j in range(n_v1003):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1003):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_70bf345e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1761():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1761():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_bdc43113", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1367(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1367(a: int, b: int) -> int:\n```", "sample_id": "python_easy_65ef2adc", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v487):\n for j in range(n_v487):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v487):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_856f4b71", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1884():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1884():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_21058dd7", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v882(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v882(a: int, b: int) -> int:\n```", "sample_id": "python_easy_6bb2b2fa", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1956():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1956():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_e9562b40", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1499):\n```", "sample_id": "python_hard_ff66cfd5", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v952():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v952():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_d1147aa3", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v65):\n for j in range(n_v65):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v65):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_629164ba", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v883():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v883():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_19036a99", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v982):\n for j in range(n_v982):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v982):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_4f9e7688", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1504):\n for j in range(n_v1504):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1504):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_8ae87e33", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1809):\n```", "sample_id": "python_hard_1dece2f2", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v895(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v895(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_a53b13e1", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v682):\n for j in range(n_v682):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v682):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_b40c9381", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1654():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1654():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_53a7aba6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v796():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v796():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_a17684db", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1650():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1650():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_c61af643", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v675):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v675):\n if condition:\n break\n```", "sample_id": "python_hard_11e559c5", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1186(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1186(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_33448463", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v127):\n```", "sample_id": "python_medium_08ee27d6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v294(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v294(a: int, b: int) -> int:\n```", "sample_id": "python_medium_a71e9686", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1334():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1334():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_7e70cb03", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v276(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v276(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_8378edca", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v706():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v706():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_34432eef", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1379():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1379():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_6ba29a3a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1425():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1425():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_56cab6ff", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v789):\n```", "sample_id": "python_hard_702d5d35", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1462(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1462(first_number, second_number):\n```", "sample_id": "python_hard_60f526ba", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1675(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1675(first_number, second_number):\n```", "sample_id": "python_easy_c0e0bc00", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v551(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v551(first_number, second_number):\n```", "sample_id": "python_hard_bae8aa38", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v306():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v306():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_8d89acbe", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v388):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v388):\n if condition:\n break\n```", "sample_id": "python_hard_80bba619", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v36():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v36():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_ffeb912a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1491):\n for j in range(n_v1491):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1491):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e3f9551c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1765():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1765():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_71592637", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v214():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v214():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_6fc49866", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v733(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v733(a: int, b: int) -> int:\n```", "sample_id": "python_medium_0b85bc2c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v522():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v522():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_caaa8682", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1866():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1866():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_0538ab34", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1614):\n```", "sample_id": "python_medium_27a6a89f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v420(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v420(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_2e610239", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v115():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v115():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_62b06f6a", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v451():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v451():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_91e29da2", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1690):\n for j in range(n_v1690):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1690):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_75747c23", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v993():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v993():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_97ff0456", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v866):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v866):\n if condition:\n break\n```", "sample_id": "python_medium_d940a74c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v694):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v694):\n if condition:\n break\n```", "sample_id": "python_medium_04c019f0", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v734(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v734(a: int, b: int) -> int:\n```", "sample_id": "python_hard_e6040e42", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v983):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v983):\n if condition:\n break\n```", "sample_id": "python_hard_1b071e85", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1883):\n for j in range(n_v1883):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1883):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_f3ee22cd", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1274():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1274():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_cd355e5f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v10):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v10):\n if condition:\n break\n```", "sample_id": "python_hard_b54a25cd", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v93):\n for j in range(n_v93):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v93):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_718b2332", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v215):\n```", "sample_id": "python_hard_a6910af0", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1227):\n for j in range(n_v1227):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1227):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_ec1c8a76", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1898):\n for j in range(n_v1898):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1898):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_6c9493a2", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1706():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1706():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_7d82f307", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1789():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1789():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_19fc104d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1889(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1889(first_number, second_number):\n```", "sample_id": "python_easy_e13eb0f2", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1557(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1557(a: int, b: int) -> int:\n```", "sample_id": "python_hard_b6248352", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v222():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v222():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_0bd009f2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v311(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v311(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_8e2e35d8", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1689():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1689():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_de7fe95e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1329):\n for j in range(n_v1329):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1329):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e3ae646c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v2():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v2():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_25a57230", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v235):\n for j in range(n_v235):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v235):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_82d9ad4e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v164):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v164):\n if condition:\n break\n```", "sample_id": "python_medium_afa50202", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1096):\n for j in range(n_v1096):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1096):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d7cbb606", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v536):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v536):\n if condition:\n break\n```", "sample_id": "python_hard_cb3c505b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1572():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1572():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_144935f0", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1009():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1009():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_e2b421fa", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v514(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v514(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_0155bc68", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v467():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v467():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_6c7c0b0c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_c4572eac", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1456):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1456):\n if condition:\n break\n```", "sample_id": "python_medium_05c5cdf6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1874():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1874():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_a46f1ddb", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v252):\n```", "sample_id": "python_hard_70c32d32", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1292):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1292):\n if condition:\n break\n```", "sample_id": "python_hard_3bc685c1", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v117):\n for j in range(n_v117):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v117):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_185bc892", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_a51375cc", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v655(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v655(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_22d8707b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_3a902dbf", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3b59d906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1154():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1154():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_ca996e94", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v862(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v862(first_number, second_number):\n```", "sample_id": "python_hard_4218e18d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v164():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v164():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_808994b0", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1493():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1493():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_1ecf25a1", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v944():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v944():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_6cb007c5", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1102):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1102):\n if condition:\n break\n```", "sample_id": "python_medium_a2e8475c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1715):\n for j in range(n_v1715):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1715):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d5ec89dd", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v1586(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1586(a: int, b: int) -> int:\n```", "sample_id": "python_medium_4231bac5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v128):\n for j in range(n_v128):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v128):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_0ebd3a3e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v961():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v961():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_9ddfcb98", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1409):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1409):\n if condition:\n break\n```", "sample_id": "python_hard_1dfa2de8", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v198):\n for j in range(n_v198):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v198):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_31852b01", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1474):\n for j in range(n_v1474):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1474):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_7329839b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v487(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v487(first_number, second_number):\n```", "sample_id": "python_hard_a1880f51", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1091():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1091():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_2cb497e8", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v537():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v537():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_ac00d6c3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1921(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1921(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_cb4a5dff", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v450(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v450(a: int, b: int) -> int:\n```", "sample_id": "python_hard_8246080b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v138):\n```", "sample_id": "python_hard_e64a2e2f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_0946810e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1069(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1069(first_number, second_number):\n```", "sample_id": "python_medium_47bb0668", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v866(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v866(a: int, b: int) -> int:\n```", "sample_id": "python_hard_c807c97b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v463):\n```", "sample_id": "python_medium_62f8f78e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1982():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1982():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_4b1005c1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v730(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v730(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_31cda39a", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1059(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1059(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_dac04dea", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v812):\n for j in range(n_v812):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v812):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_1c385ec7", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1382(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1382(first_number, second_number):\n```", "sample_id": "python_medium_a409a2aa", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_7c94bab7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1695):\n```", "sample_id": "python_medium_9e397732", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1434():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1434():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_ce408d7d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1389(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1389(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_4af152a4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1816):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1816):\n if condition:\n break\n```", "sample_id": "python_medium_81b076fa", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v122):\n for j in range(n_v122):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v122):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e155f05c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v985):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v985):\n if condition:\n break\n```", "sample_id": "python_hard_fa4fea35", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1859):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1859):\n if condition:\n break\n```", "sample_id": "python_hard_dc949774", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_e2da8820", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v194(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v194(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_f61b22c4", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1630(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1630(first_number, second_number):\n```", "sample_id": "python_easy_c0b5dc9d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v966):\n for j in range(n_v966):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v966):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_c91e48bf", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1514():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1514():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_9ba8236b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_3a902dbf", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v516():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v516():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_b7cbb47a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1152():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1152():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_4d78a618", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_f1ad7498", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1862):\n for j in range(n_v1862):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1862):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_3648fc7b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1113():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1113():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_d7317acf", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v362(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v362(a: int, b: int) -> int:\n```", "sample_id": "python_hard_6daa475f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v779):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v779):\n if condition:\n break\n```", "sample_id": "python_hard_1e472eae", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v67(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v67(a: int, b: int) -> int:\n```", "sample_id": "python_hard_33bc7226", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v169):\n for j in range(n_v169):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v169):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_62898ac9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1210):\n for j in range(n_v1210):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1210):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d18eb52b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v219(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v219(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_cdff53d0", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v904(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v904(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_ab8332db", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v324(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v324(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_06235565", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v95():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v95():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_16a62446", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v50():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v50():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_21b79218", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v469(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v469(a: int, b: int) -> int:\n```", "sample_id": "python_easy_b75149b6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1368(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1368(a: int, b: int) -> int:\n```", "sample_id": "python_medium_61d97bad", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v879():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v879():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_cf517ae2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v291(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v291(a: int, b: int) -> int:\n```", "sample_id": "python_easy_54df8233", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1478(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1478(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_edd35b7b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1532():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1532():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_e60ac3ec", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_1bfd9e5d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v628(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v628(first_number, second_number):\n```", "sample_id": "python_medium_af4092f9", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1903(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1903(first_number, second_number):\n```", "sample_id": "python_easy_39922bb1", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1637():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1637():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_9497768b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1988):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1988):\n if condition:\n break\n```", "sample_id": "python_medium_8df2138f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1303):\n for j in range(n_v1303):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1303):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_9f58c3e2", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v648):\n for j in range(n_v648):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v648):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ee2536eb", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v655():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v655():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_a229e754", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v330):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v330):\n if condition:\n break\n```", "sample_id": "python_medium_8e630f4b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1793(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1793(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_ce68e634", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v747):\n for j in range(n_v747):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v747):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d0ec7127", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1992(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1992(a: int, b: int) -> int:\n```", "sample_id": "python_medium_cc991e17", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v556():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v556():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_ad55867c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v175():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v175():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_4b656fea", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1723):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1723):\n if condition:\n break\n```", "sample_id": "python_medium_4984f476", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1390):\n for j in range(n_v1390):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1390):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_862c2114", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1669):\n for j in range(n_v1669):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1669):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e4686d5e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1978(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1978(a: int, b: int) -> int:\n```", "sample_id": "python_medium_cb5cc990", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1879():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1879():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_52537405", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v904():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v904():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_7edcfc55", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v386(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v386(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_7872cb38", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v62(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v62(first_number, second_number):\n```", "sample_id": "python_easy_1e6720cd", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1282():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1282():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_bbab0780", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1704():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1704():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_ead2f8af", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v394):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v394):\n if condition:\n break\n```", "sample_id": "python_medium_a2f224c2", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v901(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v901(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d383f4f9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_e2da8820", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_1bfd9e5d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_b277e062", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1650):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1650):\n if condition:\n break\n```", "sample_id": "python_hard_06032fc8", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1741(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1741(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d0b188bb", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v136):\n```", "sample_id": "python_hard_c04dd563", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_ce9f3f46", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v271(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v271(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_da168c6b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1157(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1157(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_86e9f425", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1740(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1740(first_number, second_number):\n```", "sample_id": "python_hard_df671e28", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v200():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v200():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_834183cb", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1201():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1201():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_b3f3d745", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1521():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1521():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_5ea5f489", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v560():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v560():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_3fed5553", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_9cfea75d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v577():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v577():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_cf522afc", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v698():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v698():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_75a2364b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v249(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v249(first_number, second_number):\n```", "sample_id": "python_medium_3d5670e8", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v124(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v124(a: int, b: int) -> int:\n```", "sample_id": "python_hard_8c39c73b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v642):\n```", "sample_id": "python_hard_7804be01", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_5f2fc867", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1132(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1132(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f40c83a7", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v990(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v990(a: int, b: int) -> int:\n```", "sample_id": "python_hard_411cbb50", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1947(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1947(a: int, b: int) -> int:\n```", "sample_id": "python_easy_e5b3ab44", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1307():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1307():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_a6aa637d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_27f89ed6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1244):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1244):\n if condition:\n break\n```", "sample_id": "python_hard_521da4f5", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1462():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1462():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_ca8582d7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1516):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1516):\n if condition:\n break\n```", "sample_id": "python_medium_258981c5", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v383():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v383():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_5218c69d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_63b3af67", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v23):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v23):\n if condition:\n break\n```", "sample_id": "python_hard_0c0300be", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v668():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v668():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_86cb63fe", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v296():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v296():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_d364b4fe", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v849):\n for j in range(n_v849):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v849):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d2045e1b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v411):\n```", "sample_id": "python_medium_f59df41e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v557):\n```", "sample_id": "python_medium_05765984", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v960(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v960(a: int, b: int) -> int:\n```", "sample_id": "python_easy_5c8c4998", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1307):\n```", "sample_id": "python_hard_ff969abd", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1620():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1620():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_7dbe0667", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v458(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v458(first_number, second_number):\n```", "sample_id": "python_hard_1db2d9a5", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1063():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1063():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_b3444513", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v368(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v368(a: int, b: int) -> int:\n```", "sample_id": "python_easy_bd6b21ca", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1445():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1445():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_1cd56c15", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1586):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1586):\n if condition:\n break\n```", "sample_id": "python_hard_aa7cef52", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v461():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v461():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_58b6df26", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v711):\n for j in range(n_v711):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v711):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d55820fc", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v244(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v244(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_6c720349", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v593(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v593(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_a448386d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1015):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1015):\n if condition:\n break\n```", "sample_id": "python_hard_853b4188", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1272():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1272():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_bb17d767", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1931):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1931):\n if condition:\n break\n```", "sample_id": "python_hard_56a3df1c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v451(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v451(first_number, second_number):\n```", "sample_id": "python_medium_e827b1cd", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v833):\n```", "sample_id": "python_hard_8e88de47", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v402(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v402(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_2e55b232", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v103():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v103():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_c8b93dd6", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v473():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v473():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_b0014f84", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v804():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v804():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_480f8f3d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1992):\n for j in range(n_v1992):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1992):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d2317fa4", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v923():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v923():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_acaa9e00", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1611):\n for j in range(n_v1611):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1611):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_ef20bf51", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1302):\n for j in range(n_v1302):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1302):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_a820297f", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v261):\n```", "sample_id": "python_hard_cfed71d5", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v777():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v777():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_1a262b5d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1369():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1369():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_961bf205", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v852(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v852(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_efc70ef4", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v532):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v532):\n if condition:\n break\n```", "sample_id": "python_hard_4eaf73c6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1258():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1258():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_1efc7d73", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v683):\n for j in range(n_v683):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v683):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_42a7eeab", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v264(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v264(a: int, b: int) -> int:\n```", "sample_id": "python_medium_07469a07", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v436):\n```", "sample_id": "python_hard_522a6ab7", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v387():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v387():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_7e1361c0", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1689):\n for j in range(n_v1689):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1689):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_6a1a1dc3", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v339(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v339(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_1f990d62", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1663):\n for j in range(n_v1663):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1663):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_55ca6ad6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1269():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1269():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_77727004", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1228():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1228():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_c33839ff", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v385(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v385(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_48530ae6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v173():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v173():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_71a8b13c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_50a18830", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v300():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v300():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_7c4ce519", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1030):\n for j in range(n_v1030):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1030):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_3dec7787", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v835):\n for j in range(n_v835):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v835):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_255e01d4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1276(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1276(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_817091fd", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v745):\n for j in range(n_v745):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v745):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d0f38721", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1596):\n```", "sample_id": "python_hard_f4748f4f", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1013(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1013(a: int, b: int) -> int:\n```", "sample_id": "python_medium_9b80fa80", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1497):\n for j in range(n_v1497):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1497):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d8a06af3", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1595):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1595):\n if condition:\n break\n```", "sample_id": "python_hard_ac9b80df", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v359):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v359):\n if condition:\n break\n```", "sample_id": "python_medium_272fd687", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_3560e64c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_3ca9041c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1106():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1106():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_20d10734", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_7c94bab7", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v336(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v336(first_number, second_number):\n```", "sample_id": "python_medium_7be28e9f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v97):\n```", "sample_id": "python_medium_bd1f34ac", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1165():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1165():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_786e5ba5", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v821):\n for j in range(n_v821):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v821):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_305f905a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v649):\n for j in range(n_v649):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v649):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_01b2e1c4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1328(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1328(first_number, second_number):\n```", "sample_id": "python_hard_ae0caf6b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1648(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1648(a: int, b: int) -> int:\n```", "sample_id": "python_hard_cfdbeb2a", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v686(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v686(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_9dbd3219", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1111):\n```", "sample_id": "python_medium_d38e4cf6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1476(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1476(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_70304865", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1769():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1769():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_1c5e44ca", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v256():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v256():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_8092ec5c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v808():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v808():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_fb26d167", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v616():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v616():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_2dd024b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1028):\n for j in range(n_v1028):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1028):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_df79e1db", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v618():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v618():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_56b7b809", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v549():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v549():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_fdcdf4e0", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_3560e64c", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v308):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v308):\n if condition:\n break\n```", "sample_id": "python_medium_94911372", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1873):\n for j in range(n_v1873):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1873):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_2f4977e2", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v187):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v187):\n if condition:\n break\n```", "sample_id": "python_medium_5d811bc4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v912):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v912):\n if condition:\n break\n```", "sample_id": "python_medium_e52e7050", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1230):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1230):\n if condition:\n break\n```", "sample_id": "python_hard_0d8b3011", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v217(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v217(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d83963f7", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v517():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v517():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_9f59866b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v38):\n for j in range(n_v38):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v38):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_efea9840", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_723519b4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1777):\n for j in range(n_v1777):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1777):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_49a1e2bd", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v612():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v612():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_efeead42", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v390():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v390():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_6013ef36", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v978):\n for j in range(n_v978):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v978):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_88e6f0da", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_63b3af67", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v128():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v128():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_fd512cc9", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v512(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v512(a: int, b: int) -> int:\n```", "sample_id": "python_hard_cc550eb9", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v894):\n```", "sample_id": "python_hard_49c61810", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v573():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v573():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_c33f2b80", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1853():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1853():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_9230a81e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1529):\n for j in range(n_v1529):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1529):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_339a8402", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_33d47fde", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_d5b7f2b1", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v661(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v661(a: int, b: int) -> int:\n```", "sample_id": "python_medium_d777a054", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v183):\n for j in range(n_v183):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v183):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_3321f6a0", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1114():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1114():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_70ebf79f", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v761(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v761(first_number, second_number):\n```", "sample_id": "python_hard_0d7e9518", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3ca9041c", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v441):\n```", "sample_id": "python_hard_e273ec08", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1630():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1630():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_820dc3ed", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_90db5188", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v194():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v194():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_b2b21aee", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v935(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v935(a: int, b: int) -> int:\n```", "sample_id": "python_hard_cc720275", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_27f89ed6", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v559):\n```", "sample_id": "python_hard_d72f4c1b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1432):\n```", "sample_id": "python_medium_3b7df6f7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v550(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v550(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_00c65af8", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1395():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1395():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_a2ab859a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v848):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v848):\n if condition:\n break\n```", "sample_id": "python_hard_bc873ab4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v155(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v155(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_7f50baeb", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v983():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v983():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_050f8895", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1212(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1212(first_number, second_number):\n```", "sample_id": "python_hard_1b3b8bf1", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v112):\n for j in range(n_v112):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v112):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_4a99e2fe", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v223():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v223():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_8baedcdf", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v350):\n for j in range(n_v350):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v350):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_44a8a524", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1886():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1886():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_7dd87fee", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_0308de8d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v569():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v569():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_ce238a00", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1161):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1161):\n if condition:\n break\n```", "sample_id": "python_hard_49fd1e9e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v832):\n for j in range(n_v832):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v832):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d7eb907e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1850):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1850):\n if condition:\n break\n```", "sample_id": "python_hard_2e39ea95", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_63b3af67", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1852(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1852(first_number, second_number):\n```", "sample_id": "python_hard_2941496f", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1678(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1678(first_number, second_number):\n```", "sample_id": "python_easy_67470f41", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v862):\n for j in range(n_v862):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v862):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_969a1445", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1341():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1341():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_3195830a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1929():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1929():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_51b3f2ec", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v850(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v850(a: int, b: int) -> int:\n```", "sample_id": "python_hard_914a983e", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1284):\n for j in range(n_v1284):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1284):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_dac90a20", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1084():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1084():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_5ea8d947", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v15(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v15(a: int, b: int) -> int:\n```", "sample_id": "python_easy_113958a7", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v262):\n```", "sample_id": "python_medium_3f531132", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_hard_6f2ce38b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v759(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v759(a: int, b: int) -> int:\n```", "sample_id": "python_hard_e60fd8c0", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v710():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v710():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_8f00a497", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v816():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v816():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_f9c68ff3", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1832(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1832(a: int, b: int) -> int:\n```", "sample_id": "python_hard_f32e1ae7", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_4497e4c9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_6369782a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v838(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v838(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_0a6cc4bb", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v740):\n for j in range(n_v740):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v740):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_daf9b6e6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v901):\n```", "sample_id": "python_medium_901b6442", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1092(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1092(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_c041e208", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1921):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1921):\n if condition:\n break\n```", "sample_id": "python_hard_8e2a4df3", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v33():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v33():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_62d29808", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v844(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v844(first_number, second_number):\n```", "sample_id": "python_easy_27d87261", "language": "python", "difficulty": "easy"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_e96dfa9a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v107):\n```", "sample_id": "python_medium_bb7bac85", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1435):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1435):\n if condition:\n break\n```", "sample_id": "python_hard_ecc22ec1", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_easy_33d47fde", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1156(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1156(a: int, b: int) -> int:\n```", "sample_id": "python_hard_900d6069", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v342(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v342(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_e46aa054", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v279):\n```", "sample_id": "python_hard_be9d403f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1504():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1504():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_7b2d4a97", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v186(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v186(a: int, b: int) -> int:\n```", "sample_id": "python_hard_043ae571", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1190(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1190(a: int, b: int) -> int:\n```", "sample_id": "python_easy_c913ad94", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v471):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v471):\n if condition:\n break\n```", "sample_id": "python_hard_245af329", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1979():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1979():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_b9c55c3b", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v41(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v41(first_number, second_number):\n```", "sample_id": "python_easy_9818aeb9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1577():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1577():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_6d39d568", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1436(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1436(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_d4376b23", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v730):\n for j in range(n_v730):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v730):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_74b00a06", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v994):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v994):\n if condition:\n break\n```", "sample_id": "python_medium_b2ddf4c2", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v579():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v579():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_3452fb3d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v43():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v43():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_c958d00a", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1345(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1345(a: int, b: int) -> int:\n```", "sample_id": "python_hard_e65eb1fd", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_81c17ab2", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_c0fdeaee", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v919):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v919):\n if condition:\n break\n```", "sample_id": "python_hard_54a7e7a4", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v560):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v560):\n if condition:\n break\n```", "sample_id": "python_medium_f47f8f2b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_hard_7673ea8a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1481):\n```", "sample_id": "python_hard_bb6141cd", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1522():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1522():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_bf58565c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_f1ad7498", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1377():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1377():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_ce79fe0c", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_723519b4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1507):\n for j in range(n_v1507):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1507):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_ff59925c", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v878(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v878(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_8afaf2df", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1940():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1940():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_d2c2d3ba", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1471():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1471():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_9235679a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v616):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v616):\n if condition:\n break\n```", "sample_id": "python_medium_75d6b69e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v807):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v807):\n if condition:\n break\n```", "sample_id": "python_medium_90defd13", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v656(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v656(first_number, second_number):\n```", "sample_id": "python_easy_30938ef9", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_medium_8d441813", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1332():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1332():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_158687c2", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v999(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v999(first_number, second_number):\n```", "sample_id": "python_medium_1e41c2b1", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1171():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1171():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_6e9309e4", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_ce9f3f46", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v561():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v561():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_16797cac", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1402(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1402(a: int, b: int) -> int:\n```", "sample_id": "python_medium_51c3ec02", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1623():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1623():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_d84fe5be", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v909():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v909():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_c0d3a85b", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1899():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1899():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_441593ee", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1046(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1046(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_8b7e6e5c", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1475):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1475):\n if condition:\n break\n```", "sample_id": "python_hard_c88d12b1", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v70):\n```", "sample_id": "python_medium_1817fb26", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_hard_0faa9843", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v809):\n for j in range(n_v809):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v809):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_face1d03", "language": "python", "difficulty": "medium"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_easy_17de1f3f", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_625692f9", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_65909c9b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_hard_5861437c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_8d441813", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_easy_65909c9b", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1416():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1416():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_44f51d45", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_0308de8d", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_819ae0ca", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_medium_eac796f4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1125(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1125(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_b0dba1a2", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_5f2fc867", "language": "python", "difficulty": "easy"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_50a18830", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v296():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v296():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_e6f395fb", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1199):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1199):\n if condition:\n break\n```", "sample_id": "python_hard_6a2e7fab", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x <= y:\n return True\n return False\n```", "sample_id": "python_medium_6369782a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_eac796f4", "language": "python", "difficulty": "easy"} {"text": "user\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n for neighbor in graph[start]:\n if neighbor not in visited:\n dfs(graph, neighbor, visited)\n \n return visited\n```", "sample_id": "python_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v995(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v995(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_6c2a2a5b", "language": "python", "difficulty": "hard"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v957():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v957():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_eb996a3a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1621():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v1621():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_0c9f5893", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_medium_7673ea8a", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: use built-in\n\n**Improved code:**\n```python\nresult = [x*2 for x in list]\n```", "sample_id": "python_medium_5861437c", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = [i ** 2 for i in range(10) if i % 2 == 0]\n```", "sample_id": "python_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_medium_7153cec6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_easy_0308de8d", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1644():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v1644():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_74377b67", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1134():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1134():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_f95dc490", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1534):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1534):\n if condition:\n break\n```", "sample_id": "python_medium_6365d317", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_easy_de2f3509", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_easy_7153cec6", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v931():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v931():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_2bd3b83c", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1446():\n # Buggy: list = list + [x]\n x = 10\n result = x list = list + [x] 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is list append: using 'list = list + [x]' instead of 'list.append(x)'.\n\n**Improved code:**\n```python\ndef function_v1446():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_0e12cec6", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef get_last_element(arr):\n return arr[len(arr)]\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is index: using 'arr[len(arr)]' instead of 'arr[len(arr)-1]'.\n\n**Improved code:**\n```python\ndef get_last_element(arr):\n return arr[len(arr)-1]\n```", "sample_id": "python_medium_81c17ab2", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1856():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v1856():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_187aa6aa", "language": "python", "difficulty": "medium"} {"text": "user\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n left = mid + 1\n else:\n right = mid - 1\n \n return -1\n```", "sample_id": "python_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v533():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v533():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_781fb28d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: use constants\n\n**Improved code:**\n```python\nSTATUS_ACTIVE = 1\n\nif status == STATUS_ACTIVE:\n```", "sample_id": "python_hard_8d441813", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v290(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v290(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_ec0b3873", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_hard_bfafafb6", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_easy_07b0f465", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v918():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v918():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_235b247b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_07b0f465", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v211():\n # Buggy: '{}'.format(x)\n x = 10\n result = x '{}'.format(x) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is string format: using ''{}'.format(x)' instead of 'f'{x}''.\n\n**Improved code:**\n```python\ndef function_v211():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_f79bb1ff", "language": "python", "difficulty": "easy"} {"text": "user\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if x == pivot]\n right = [x for x in arr if x > pivot]\n \n return quicksort(left) + middle + quicksort(right)\n```", "sample_id": "python_hard_7153cec6", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v589(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v589(a: int, b: int) -> int:\n```", "sample_id": "python_medium_0fe5ca6a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v997():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v997():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_f4a8296e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v572():\n # Buggy: /\n x = 10\n result = x / 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is division: using '/' instead of '//'.\n\n**Improved code:**\n```python\ndef function_v572():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_f8de0e7f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1320(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1320(first_number, second_number):\n```", "sample_id": "python_medium_3bb02733", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1301(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1301(first_number, second_number):\n```", "sample_id": "python_hard_d6f91d7c", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v835():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v835():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_45c8f3d3", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_medium_c4572eac", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\nresult = very_long_function_call_v1171(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1171(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_c9facb71", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1433():\n # Buggy: ==\n x = 10\n result = x == 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is assignment: using '==' instead of '='.\n\n**Improved code:**\n```python\ndef function_v1433():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_073ccf99", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v30):\n```", "sample_id": "python_hard_34982175", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_medium_1485a906", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension for better readability and performance.\n\n**Improved code:**\n```python\nresult = {key: value * 2 for key, value in items}\n```", "sample_id": "python_easy_6f2ce38b", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef process(obj):\n if obj:\n return obj.value\n return None\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is null check: using 'if obj:' instead of 'if obj is not None:'.\n\n**Improved code:**\n```python\ndef process(obj):\n if obj is not None:\n return obj.value\n return None\n```", "sample_id": "python_easy_b277e062", "language": "python", "difficulty": "easy"} {"text": "user\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to simplify boolean expression for better readability and performance.\n\n**Improved code:**\n```python\nreturn condition\n```", "sample_id": "python_medium_3988ac6d", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v554():\n # Buggy: range(1, n)\n x = 10\n result = x range(1, n) 2\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is range: using 'range(1, n)' instead of 'range(n)'.\n\n**Improved code:**\n```python\ndef function_v554():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_6967fb27", "language": "python", "difficulty": "easy"} {"text": "user\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n \n result.extend(left[i:])\n result.extend(right[j:])\n return result\n```", "sample_id": "python_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1629):\n```", "sample_id": "python_medium_191b4abc", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_easy_a92c2d8e", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(maxsize=None)\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```", "sample_id": "python_medium_3b59d906", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x == y:\n return True\n return False\n```", "sample_id": "python_medium_122aafb5", "language": "python", "difficulty": "medium"} {"text": "user\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for better readability and performance.\n\n**Improved code:**\n```python\nfor i, item in enumerate(items):\n print(i, item)\n```", "sample_id": "python_hard_de2f3509", "language": "python", "difficulty": "hard"} {"text": "user\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\n return data and len(data) >= 10\n\ndef _transform_data(data):\n return [item * 2 for item in data]\n```", "sample_id": "python_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v472):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v472):\n if condition:\n break\n```", "sample_id": "python_medium_17d02e16", "language": "python", "difficulty": "medium"} {"text": "user\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in graph[vertex]:\n if neighbor not in visited:\n visited.add(neighbor)\n queue.append(neighbor)\n \n return visited\n```", "sample_id": "python_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\n**Improved code:**\n```python\ndef check_value(x, y):\n if x >= y:\n return True\n return False\n```", "sample_id": "python_easy_4790b0e9", "language": "python", "difficulty": "easy"}