{"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1389():\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_v1389():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_5e786c23", "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_v1512(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1512(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_4d3d5fa8", "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_v283):\n```", "sample_id": "python_hard_20f53c0b", "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_v203):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v203):\n if condition:\n break\n```", "sample_id": "python_medium_09a59e57", "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\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\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.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 check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\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 quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if 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_hard_e96dfa9a", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1563):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1563):\n if condition:\n break\n```", "sample_id": "python_hard_92479bec", "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 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 module\n\nInput code:\n```python\ndef calc_v447(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v447(first_number, second_number):\n```", "sample_id": "python_hard_b8bd80e7", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1484):\n for j in range(n_v1484):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1484):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d290fc40", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1796():\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_v1796():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_65f3a727", "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\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(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_v271():\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_v271():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_465a3ea2", "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_v1773):\n```", "sample_id": "python_medium_63410f32", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v706(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v706(a: int, b: int) -> int:\n```", "sample_id": "python_easy_fbc35840", "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_v1856(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1856(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_47544873", "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_v357():\n # Buggy: /\n x = 10\n 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_v357():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_7c262476", "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 loop\n\nInput code:\n```python\ndef function_v685():\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_v685():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_ef396d10", "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 dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension 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 process_v77():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v77():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_cf4ef68e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v347():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v347():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_2ab253e2", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v121():\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_v121():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_e230ec9c", "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\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v37():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v37():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_b366df7a", "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_v1972(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1972(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_611421f1", "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 function\n\nInput code:\n```python\ndef process_v1625():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1625():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_42dbb0b0", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v231(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v231(first_number, second_number):\n```", "sample_id": "python_medium_f8ad2efc", "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_v72):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v72):\n if condition:\n break\n```", "sample_id": "python_hard_51ecd71a", "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\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability 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_v443():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v443():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a84a99da", "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(n_v258):\n for j in range(n_v258):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v258):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_c61915e9", "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 calc_v197(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v197(first_number, second_number):\n```", "sample_id": "python_hard_cd7daf07", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v992():\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_v992():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_d17498f7", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v528):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v528):\n if condition:\n break\n```", "sample_id": "python_medium_1561373f", "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_v971():\n # Buggy: /\n x = 10\n 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_v971():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_b6f4f196", "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_v465():\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_v465():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_ad7c2516", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v111():\n # Buggy: ==\n x = 10\n 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_v111():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_8c60b2cc", "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\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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_v1462):\n for j in range(n_v1462):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1462):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_c90c3590", "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\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v584():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v584():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_97ed4ab3", "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 check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\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\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_v192):\n```", "sample_id": "python_hard_71bffeff", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1621(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1621(a: int, b: int) -> int:\n```", "sample_id": "python_medium_e3638e29", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v130):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v130):\n if condition:\n break\n```", "sample_id": "python_hard_4499c712", "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_v800(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v800(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_a82a714e", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v294():\n # Buggy: ==\n x = 10\n 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_v294():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_9d23d998", "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_v70(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v70(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_f1361359", "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\nfor i in range(n_v172):\n for j in range(n_v172):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v172):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_4647d60d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1988(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1988(a: int, b: int) -> int:\n```", "sample_id": "python_hard_6d5c87e0", "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 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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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\nfor i in range(n_v935):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v935):\n if condition:\n break\n```", "sample_id": "python_medium_896d4f8b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v635):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v635):\n if condition:\n break\n```", "sample_id": "python_medium_2a71ac65", "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\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 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_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_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_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\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1141():\n # Buggy: /\n x = 10\n 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_v1141():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_44d07226", "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\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in 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(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1597):\n```", "sample_id": "python_medium_4f400eb0", "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_v540(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v540(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_e83376b8", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1570(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1570(a: int, b: int) -> int:\n```", "sample_id": "python_medium_4c360d6d", "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 quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if 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\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability 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 calc_v182(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v182(first_number, second_number):\n```", "sample_id": "python_medium_c3218beb", "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 BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in 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\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_v1603(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1603(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_82e7b51e", "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_v564):\n```", "sample_id": "python_medium_8d016c9f", "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 loop\n\nInput code:\n```python\ndef function_v658():\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_v658():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_8fa4f428", "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 extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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 quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if 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 quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if 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_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\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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_easy_0308de8d", "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 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_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v931):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v931):\n if condition:\n break\n```", "sample_id": "python_medium_6f2f10d4", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v784():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v784():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_f809c9ed", "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 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 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\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 loop\n\nInput code:\n```python\ndef function_v634():\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_v634():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_fc8bcbaa", "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 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_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v924(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v924(a: int, b: int) -> int:\n```", "sample_id": "python_easy_57490110", "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_v824):\n```", "sample_id": "python_medium_9e49f390", "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 enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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\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 calc_v1608(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1608(first_number, second_number):\n```", "sample_id": "python_hard_2b06b6a7", "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\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if 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_medium_a51375cc", "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 calc_v1486(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1486(first_number, second_number):\n```", "sample_id": "python_hard_b173332e", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v576():\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_v576():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_c4ea2082", "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\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1506():\n # Buggy: /\n x = 10\n 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_v1506():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_cd7b67df", "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 BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in 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_v710):\n for j in range(n_v710):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v710):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_2db46c96", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v304():\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_v304():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_3605b091", "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_v1139(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1139(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_80326222", "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 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 check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\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_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\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 BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in 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_122aafb5", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1733():\n # Buggy: ==\n x = 10\n 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_v1733():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_5884eb5d", "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_v1633():\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_v1633():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_86b3e8aa", "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_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\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\nfor i in range(n_v911):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v911):\n if condition:\n break\n```", "sample_id": "python_hard_6710bfc8", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1113():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1113():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_d056e737", "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_hard_1485a906", "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\ndef calc_v1944(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1944(first_number, second_number):\n```", "sample_id": "python_medium_0587afee", "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 enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_v1323(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1323(first_number, second_number):\n```", "sample_id": "python_hard_875943b4", "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\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.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 process_v638():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v638():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_c71213d6", "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\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_v1173():\n # Buggy: ==\n x = 10\n 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_v1173():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_f7e1595f", "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_v1181):\n```", "sample_id": "python_hard_b90d6ce8", "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 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 add_v216(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v216(a: int, b: int) -> int:\n```", "sample_id": "python_hard_ed68e434", "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_easy_7673ea8a", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1995):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1995):\n if condition:\n break\n```", "sample_id": "python_hard_e21bb18f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v381():\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_v381():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_07602b0d", "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_hard_17de1f3f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v621():\n # Buggy: ==\n x = 10\n 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_v621():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_59bd52d8", "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\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v748(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v748(a: int, b: int) -> int:\n```", "sample_id": "python_hard_c6c1ef19", "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 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 module\n\nInput code:\n```python\nresult = very_long_function_call_v544(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v544(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_21e46292", "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_v1145(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1145(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_a60fb35a", "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\nfor i in range(n_v1674):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1674):\n if condition:\n break\n```", "sample_id": "python_medium_d9b279e8", "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_v1701(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1701(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_b183ed52", "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\nresult = very_long_function_call_v839(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v839(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_48e28de5", "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_v1137):\n for j in range(n_v1137):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1137):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_48eefcdd", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1533):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1533):\n if condition:\n break\n```", "sample_id": "python_medium_1877f2f7", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1729():\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_v1729():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_ba824e45", "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\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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\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 extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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\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\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 function\n\nInput code:\n```python\nresult = very_long_function_call_v106(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v106(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_72b42008", "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 recursion implementation\n\nInput code:\n```python\nfor i in range(n_v1680):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1680):\n if condition:\n break\n```", "sample_id": "python_medium_4bdb960b", "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 list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability 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\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v776):\n for j in range(n_v776):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v776):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_02504513", "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\nresult = very_long_function_call_v475(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v475(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_af23e68f", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1449():\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_v1449():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_62fe1d76", "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 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 simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 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\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(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_v345(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v345(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_8a0db286", "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 check_value(x, y):\n if x = y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '=' instead of '=='.\n\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_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\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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 method\n\nInput code:\n```python\ndef function_v929():\n # Buggy: ==\n x = 10\n 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_v929():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_6976759c", "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_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\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v946(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v946(a: int, b: int) -> int:\n```", "sample_id": "python_medium_043151b0", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1553():\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_v1553():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_b7e2b1e9", "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 calc_v1025(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1025(first_number, second_number):\n```", "sample_id": "python_medium_9040ea18", "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 enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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 process_v1439():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1439():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_d2dc9b7d", "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_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\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v306():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v306():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_95de21bd", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v758):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v758):\n if condition:\n break\n```", "sample_id": "python_hard_591e18e4", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v476(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v476(first_number, second_number):\n```", "sample_id": "python_medium_84782824", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v986):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v986):\n if condition:\n break\n```", "sample_id": "python_medium_e1103890", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v982():\n # Buggy: /\n x = 10\n 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_v982():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_93523fde", "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\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability 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\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 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 enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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_v335():\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_v335():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_c1096641", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v520):\n for j in range(n_v520):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v520):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_65e9a5cc", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v152():\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_v152():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_e9548f58", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1527():\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_v1527():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_4c5f043c", "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 binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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_v37):\n```", "sample_id": "python_medium_79c650b6", "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\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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\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_v1121):\n```", "sample_id": "python_hard_454444a8", "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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_3a902dbf", "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\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1223():\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_v1223():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_dc96d8ee", "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\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v364():\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_v364():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_c2a470b0", "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\ndef process_v1580():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1580():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_94e9cb1a", "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_v792(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v792(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_d7f3e050", "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 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_v256):\n```", "sample_id": "python_hard_319ffc9b", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v563():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v563():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_b6db42ac", "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\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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\ndef process_v1878():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1878():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_8c262546", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v1843():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1843():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_9f3623c7", "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_v178):\n for j in range(n_v178):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v178):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_d258e4af", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v655):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v655):\n if condition:\n break\n```", "sample_id": "python_medium_9b99921b", "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_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_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 simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 process_v1835():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1835():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_d99a7924", "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 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 module\n\nInput code:\n```python\ndef calc_v1050(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1050(first_number, second_number):\n```", "sample_id": "python_easy_575cbffc", "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_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\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n 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\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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 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 add_v1209(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1209(a: int, b: int) -> int:\n```", "sample_id": "python_easy_4e816d77", "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\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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 class\n\nInput code:\n```python\ndef process_v1729():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1729():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_e4478a34", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1108(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1108(a: int, b: int) -> int:\n```", "sample_id": "python_medium_c1f60b1d", "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 add_v1475(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1475(a: int, b: int) -> int:\n```", "sample_id": "python_medium_ecc26523", "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 function\n\nInput code:\n```python\ndef function_v225():\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_v225():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_a0ebafc0", "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 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(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1720):\n```", "sample_id": "python_medium_0ae909b5", "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_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\nImplement DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n 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 binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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_v1111():\n # Buggy: ==\n x = 10\n 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_v1111():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_cde8b322", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v773():\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_v773():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_d6baf2bc", "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 module\n\nInput code:\n```python\ndef process_v199():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v199():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_d022a62f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v861(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v861(first_number, second_number):\n```", "sample_id": "python_easy_d08bbe1e", "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\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v75(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v75(a: int, b: int) -> int:\n```", "sample_id": "python_hard_e89c5878", "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 module\n\nInput code:\n```python\ndef calc_v1056(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1056(first_number, second_number):\n```", "sample_id": "python_hard_5b9656df", "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_v21):\n```", "sample_id": "python_medium_689b8279", "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_easy_1485a906", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1101):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1101):\n if condition:\n break\n```", "sample_id": "python_medium_0b67cd3d", "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 loop\n\nInput code:\n```python\ndef function_v230():\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_v230():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_489279cd", "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_v1707):\n```", "sample_id": "python_hard_7f86ba80", "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_medium_a92c2d8e", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1870):\n for j in range(n_v1870):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1870):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_07b24632", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v67():\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_v67():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_6ba86dd5", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1267(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1267(first_number, second_number):\n```", "sample_id": "python_hard_972ac613", "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\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1923():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1923():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_7f151997", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1962():\n # Buggy: ==\n x = 10\n 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_v1962():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_b18f0b02", "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 dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension 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_v848(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v848(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_caa592d2", "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\nfor i in range(n_v1588):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1588):\n if condition:\n break\n```", "sample_id": "python_hard_e3ad0852", "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 function_v674():\n # Buggy: /\n x = 10\n 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_v674():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_a3b0f978", "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_easy_0308de8d", "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_v636(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v636(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_3f193da8", "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 process_v564():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v564():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_312dd016", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v892():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v892():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_42803581", "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_v1728):\n```", "sample_id": "python_hard_8749c326", "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\ndef calc_v669(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v669(first_number, second_number):\n```", "sample_id": "python_easy_e27f7fd2", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1319(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1319(first_number, second_number):\n```", "sample_id": "python_hard_9c8e2c86", "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_v480():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v480():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_5b99fd32", "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 enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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_hard_cb24a338", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1973(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1973(first_number, second_number):\n```", "sample_id": "python_easy_5b7e0ade", "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_v1582):\n```", "sample_id": "python_medium_7cadca5f", "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 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 DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n 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_v1537):\n for j in range(n_v1537):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1537):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_9e748bea", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1978():\n # Buggy: ==\n x = 10\n 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_v1978():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_49903823", "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 calc_v1426(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1426(first_number, second_number):\n```", "sample_id": "python_medium_77212ef7", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1745():\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_v1745():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_76e15748", "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\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1925(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1925(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_bb0271bf", "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 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\ndef calc_v1552(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1552(first_number, second_number):\n```", "sample_id": "python_easy_ab38e55d", "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 extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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 extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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_v1006(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1006(first_number, second_number):\n```", "sample_id": "python_hard_4c53d1a9", "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\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 add_v1890(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1890(a: int, b: int) -> int:\n```", "sample_id": "python_hard_fb9963bf", "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 check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\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\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v994():\n # Buggy: /\n x = 10\n 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_v994():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_cd3e2ca9", "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 loop\n\nInput code:\n```python\ndef function_v1110():\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_v1110():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_ebfe592f", "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 binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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_v1355):\n for j in range(n_v1355):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1355):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_e8d1a208", "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_v1723(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1723(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_8dd8afcd", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v109():\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_v109():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_37c3bd66", "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\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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_v1218):\n for j in range(n_v1218):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1218):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_715a9f2d", "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 calc_v737(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v737(first_number, second_number):\n```", "sample_id": "python_medium_c1918396", "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 merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.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_v652():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v652():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a8a2360d", "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 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_v1759):\n```", "sample_id": "python_hard_a332f9e5", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1356):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1356):\n if condition:\n break\n```", "sample_id": "python_medium_5f54a6e7", "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 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_v1828):\n```", "sample_id": "python_medium_4242745a", "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_v416):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v416):\n if condition:\n break\n```", "sample_id": "python_medium_b4be9e28", "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 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_v607):\n```", "sample_id": "python_medium_19d1556f", "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\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.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\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v363():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v363():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_4b43f0b4", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1697():\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_v1697():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_ff458f35", "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 calc_v1275(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1275(first_number, second_number):\n```", "sample_id": "python_medium_0b6c226b", "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_v1450(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1450(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_bce1b43a", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v753(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v753(first_number, second_number):\n```", "sample_id": "python_hard_00e8b5ab", "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\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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 loop implementation\n\nInput code:\n```python\nfor i in range(n_v483):\n for j in range(n_v483):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v483):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_5c271905", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1069():\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_v1069():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_00440bfc", "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\nresult = very_long_function_call_v1535(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1535(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_40bbe95c", "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\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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_9cfea75d", "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 class\n\nInput code:\n```python\nresult = very_long_function_call_v1571(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1571(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_f76ff90e", "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\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(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_v875):\n```", "sample_id": "python_hard_05e30eed", "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_v46):\n```", "sample_id": "python_medium_8db68a1b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v752):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v752):\n if condition:\n break\n```", "sample_id": "python_medium_050fa33f", "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 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\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v726(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v726(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_6df9acdf", "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\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_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\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability 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 check_value(x, y):\n if x < y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '<' instead of '<='.\n\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_v431():\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_v431():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_caeb2857", "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 enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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_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_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_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v141(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v141(first_number, second_number):\n```", "sample_id": "python_medium_a561c0e7", "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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 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 data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1904):\n for j in range(n_v1904):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1904):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_3211022b", "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_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1285():\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_v1285():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_82d2c645", "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 process_v1765():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1765():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_3ab8aadb", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1893():\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_v1893():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_c71f7be5", "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_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\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\nImplement quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if 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_hard_ce9f3f46", "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 function\n\nInput code:\n```python\ndef calc_v1891(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1891(first_number, second_number):\n```", "sample_id": "python_hard_eb790092", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v345():\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_v345():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_90f91b6c", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v31(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v31(a: int, b: int) -> int:\n```", "sample_id": "python_medium_199aa9a7", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1371):\n for j in range(n_v1371):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1371):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_0470021f", "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 calc_v1515(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1515(first_number, second_number):\n```", "sample_id": "python_easy_205269ca", "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_v1660):\n```", "sample_id": "python_hard_570d828c", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1559():\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_v1559():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_a310b9df", "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_medium_bfafafb6", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v119(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v119(a: int, b: int) -> int:\n```", "sample_id": "python_medium_450688aa", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v289(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v289(a: int, b: int) -> int:\n```", "sample_id": "python_hard_483b9e7c", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v872):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v872):\n if condition:\n break\n```", "sample_id": "python_hard_f76106d1", "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 process_v83():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v83():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_de6d6200", "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\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v981():\n # Buggy: /\n x = 10\n 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_v981():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_b0327ef7", "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 list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability 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_v1343):\n for j in range(n_v1343):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1343):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_76b7fcd0", "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\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 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 module\n\nInput code:\n```python\nresult = very_long_function_call_v561(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v561(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_3272c1b5", "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_hard_cb24a338", "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_v29):\n```", "sample_id": "python_medium_91eecba4", "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\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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_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_v1569(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1569(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_62239ed8", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1638):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1638):\n if condition:\n break\n```", "sample_id": "python_medium_968d3df3", "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_v280):\n```", "sample_id": "python_hard_678ca6b7", "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 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(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v775):\n```", "sample_id": "python_hard_4ea3527a", "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\nfor i in range(n_v1528):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1528):\n if condition:\n break\n```", "sample_id": "python_medium_2663ce4a", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1807():\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_v1807():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_8721502f", "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\nfor i in range(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1750):\n```", "sample_id": "python_hard_b6a28a09", "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_v1877):\n```", "sample_id": "python_hard_8f7acee0", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1590):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1590):\n if condition:\n break\n```", "sample_id": "python_hard_9df9e4cc", "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 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 dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension 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(n_v486):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v486):\n if condition:\n break\n```", "sample_id": "python_hard_44002c54", "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_v1770):\n```", "sample_id": "python_hard_9568cf65", "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 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_v808):\n```", "sample_id": "python_hard_9f597db0", "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 function\n\nInput code:\n```python\ndef function_v428():\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_v428():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_80f14ba6", "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_v1668(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1668(a: int, b: int) -> int:\n```", "sample_id": "python_hard_509046e8", "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 class\n\nInput code:\n```python\ndef calc_v875(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v875(first_number, second_number):\n```", "sample_id": "python_medium_e442be83", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1298):\n for j in range(n_v1298):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1298):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_8fc9af60", "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\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v664(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v664(first_number, second_number):\n```", "sample_id": "python_hard_4745bc9d", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1283():\n # Buggy: /\n x = 10\n 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_v1283():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_95511917", "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 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_v781(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v781(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_408b4272", "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 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\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(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_v1387):\n```", "sample_id": "python_medium_ec8f21cb", "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 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 conditional\n\nInput code:\n```python\ndef function_v70():\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_v70():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_ae0070f2", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v413):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v413):\n if condition:\n break\n```", "sample_id": "python_medium_57028336", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1651():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1651():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_a8950ee0", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v608():\n # Buggy: /\n x = 10\n 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_v608():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_a8d59d32", "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_v343(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v343(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_fff464f0", "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_v991(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v991(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_50c100a8", "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 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\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1941():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1941():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_8f69cb1e", "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\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_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_v829(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v829(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_a4ce341a", "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\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability 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_medium_de2f3509", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1327():\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_v1327():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_992d7bcc", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v1225):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1225):\n if condition:\n break\n```", "sample_id": "python_hard_75fa7539", "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\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.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_v1377):\n```", "sample_id": "python_hard_ea689734", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1965(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1965(first_number, second_number):\n```", "sample_id": "python_medium_a7cb0bd2", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v321(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v321(a: int, b: int) -> int:\n```", "sample_id": "python_easy_f61919c8", "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\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension 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_v1683(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1683(a: int, b: int) -> int:\n```", "sample_id": "python_medium_7d9ca051", "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_v729):\n```", "sample_id": "python_hard_8dcc3fd2", "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 check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(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 conditional\n\nInput code:\n```python\ndef function_v199():\n # Buggy: ==\n x = 10\n 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_v199():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_056e41a2", "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_90db5188", "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\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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\ndef add_v651(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v651(a: int, b: int) -> int:\n```", "sample_id": "python_hard_0019e196", "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\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1748):\n for j in range(n_v1748):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1748):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_4252ae10", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v165():\n # Buggy: /\n x = 10\n 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_v165():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_31ccd463", "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 enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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_v1696():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1696():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_47501b23", "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 dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension 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_v1360():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1360():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_eeaa8561", "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\nImplement binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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 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_hard_1485a906", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v542(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v542(first_number, second_number):\n```", "sample_id": "python_medium_46670972", "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\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 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 function\n\nInput code:\n```python\ndef function_v89():\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_v89():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_79b8dc3e", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef process_v72():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v72():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_fa9565a5", "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 calc_v1541(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1541(first_number, second_number):\n```", "sample_id": "python_medium_620e097a", "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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_v1380():\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_v1380():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_acc1b177", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v589():\n # Buggy: ==\n x = 10\n 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_v589():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_935b0f3c", "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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension 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\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v952(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v952(a: int, b: int) -> int:\n```", "sample_id": "python_hard_bfb6a430", "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\nfor i in range(n_v1899):\n for j in range(n_v1899):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1899):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_d3445138", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1294():\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_v1294():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_e3b1d885", "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(len(arr)):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: avoid repeated calculations\n\n**Improved code:**\n```python\nn = len(arr)\nfor i in range(n_v1044):\n```", "sample_id": "python_hard_2d501a5e", "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_v1154(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1154(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_809f999e", "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 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_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\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v904):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v904):\n if condition:\n break\n```", "sample_id": "python_hard_2284ca88", "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\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_v575):\n```", "sample_id": "python_medium_438301f9", "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\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v230(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v230(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_b3baf127", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v238():\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_v238():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_72153cf8", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v947(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v947(first_number, second_number):\n```", "sample_id": "python_medium_266446f8", "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_hard_8d441813", "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 conditional\n\nInput code:\n```python\ndef function_v8():\n # Buggy: ==\n x = 10\n 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_v8():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_f27293f8", "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 class\n\nInput code:\n```python\ndef calc_v566(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v566(first_number, second_number):\n```", "sample_id": "python_medium_64a26431", "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 use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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\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_v726):\n for j in range(n_v726):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v726):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_e8a8e7ef", "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_medium_d5b7f2b1", "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_v787(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v787(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_7662dafd", "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\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\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension 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 calc_v1016(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1016(first_number, second_number):\n```", "sample_id": "python_medium_cc1375f9", "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_v1077():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1077():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_38255698", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1022():\n # Buggy: /\n x = 10\n 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_v1022():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_c78c0fdc", "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\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\ndef process_v358():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v358():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_d47d1d11", "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\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_hard_a92c2d8e", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v1663(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1663(a: int, b: int) -> int:\n```", "sample_id": "python_easy_5cd3bc8c", "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_v1298(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1298(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_a089a85f", "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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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\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 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 check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\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_easy_0faa9843", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v372():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v372():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_9b2a7218", "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 function_v1083():\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_v1083():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_86b3fc2a", "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\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v727():\n # Buggy: ==\n x = 10\n 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_v727():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_8adadca3", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1581):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1581):\n if condition:\n break\n```", "sample_id": "python_hard_65878263", "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 calc_v1229(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1229(first_number, second_number):\n```", "sample_id": "python_hard_7524b48f", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v713(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v713(a: int, b: int) -> int:\n```", "sample_id": "python_hard_630cbc45", "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 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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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\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\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\nresult = very_long_function_call_v841(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v841(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_36b6e2d0", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v937():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v937():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_1e6fbceb", "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_v42(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v42(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_a5f1c466", "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 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_v1315(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1315(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_easy_1c259239", "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 class\n\nInput code:\n```python\ndef function_v348():\n # Buggy: /\n x = 10\n 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_v348():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_445c8ef8", "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 process_v1494():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1494():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_77bc4ad7", "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 calc_v394(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v394(first_number, second_number):\n```", "sample_id": "python_hard_bf0af849", "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 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 extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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_v568(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v568(first_number, second_number):\n```", "sample_id": "python_medium_3e997db9", "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\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_v1423(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1423(a: int, b: int) -> int:\n```", "sample_id": "python_hard_a0e4b083", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1417():\n # Buggy: /\n x = 10\n 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_v1417():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_130b693c", "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_e2da8820", "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_v1518():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1518():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_31c3c1c9", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v1458():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1458():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_7c5c00b5", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1762():\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_v1762():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_8bb606e3", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef add_v1369(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1369(a: int, b: int) -> int:\n```", "sample_id": "python_medium_13c4fbf2", "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_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_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1364):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1364):\n if condition:\n break\n```", "sample_id": "python_hard_aa4cf19b", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1502):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1502):\n if condition:\n break\n```", "sample_id": "python_medium_495be929", "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_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 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\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v331():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v331():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_4425eb40", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v1152(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1152(first_number, second_number):\n```", "sample_id": "python_hard_8ac6ea24", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1702):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1702):\n if condition:\n break\n```", "sample_id": "python_hard_9d7b92c2", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1667(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1667(first_number, second_number):\n```", "sample_id": "python_medium_1dcd2aff", "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_v233():\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_v233():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_ff57b101", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v277():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v277():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_07e7b6ef", "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 function_v1743():\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_v1743():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_dac550a1", "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 loop\n\nInput code:\n```python\ndef function_v1066():\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_v1066():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_medium_5dfdf454", "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_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v1174():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1174():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_9ab8ca9b", "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_medium_de2f3509", "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 module\n\nInput code:\n```python\ndef calc_v1099(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1099(first_number, second_number):\n```", "sample_id": "python_medium_924180b2", "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\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.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_v328):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v328):\n if condition:\n break\n```", "sample_id": "python_hard_fff7107f", "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_v447):\n```", "sample_id": "python_hard_7a6771d5", "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 extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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\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_v1934():\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_v1934():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_e6d63272", "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\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(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_v1198):\n for j in range(n_v1198):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1198):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_68df7b35", "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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 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 class\n\nInput code:\n```python\nresult = very_long_function_call_v1615(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1615(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_medium_9dcf12d6", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v924):\n for j in range(n_v924):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v924):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_a1bd5a23", "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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_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_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_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_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_v554(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v554(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_2eec4365", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v615(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v615(first_number, second_number):\n```", "sample_id": "python_medium_7393a0af", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v620(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v620(first_number, second_number):\n```", "sample_id": "python_medium_6fd06e95", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1662):\n for j in range(n_v1662):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1662):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_17ba9eb3", "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\nRefactor this code to simplify boolean expression\n\nInput code:\n```python\nif condition == True:\n return True\nelse:\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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\nRefactor this code to extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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 process_v1118():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1118():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_26be0341", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef process_v545():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v545():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_0f0a093f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v1999():\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_v1999():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_easy_76df6a4f", "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_easy_3988ac6d", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v1612(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1612(first_number, second_number):\n```", "sample_id": "python_hard_38964bb4", "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_v421):\n```", "sample_id": "python_medium_888066ac", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v237():\n # Buggy: ==\n x = 10\n 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_v237():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_4adc9ab0", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v276):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v276):\n if condition:\n break\n```", "sample_id": "python_hard_00c51009", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v842():\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_v842():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_4ae88b96", "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_easy_cb24a338", "language": "python", "difficulty": "easy"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1196):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1196):\n if condition:\n break\n```", "sample_id": "python_medium_3bf99f9f", "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\ndef process_v1244():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v1244():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_medium_99aa72e9", "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_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 loop implementation\n\nInput code:\n```python\nfor i in range(n_v680):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v680):\n if condition:\n break\n```", "sample_id": "python_medium_4eab53ff", "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 enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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 function\n\nInput code:\n```python\nresult = very_long_function_call_v894(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v894(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_6039800b", "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 merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.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 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_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef add_v559(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v559(a: int, b: int) -> int:\n```", "sample_id": "python_medium_fc086367", "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 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\nRefactor this code to use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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\nImprove the code style and readability of this function\n\nInput code:\n```python\ndef calc_v723(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v723(first_number, second_number):\n```", "sample_id": "python_easy_327eaab0", "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 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 binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_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_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\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 DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n 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\nRefactor this code to use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability 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\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v66(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v66(a: int, b: int) -> int:\n```", "sample_id": "python_easy_a3a13626", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v722():\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_v722():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_89042dc6", "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\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v381):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v381):\n if condition:\n break\n```", "sample_id": "python_medium_d095e01f", "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_v295():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v295():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_easy_9c6d88eb", "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 check_value(x, y):\n if x > y:\n return True\n return False\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** The bug is comparison: using '>' instead of '>='.\n\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\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in 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_v1659(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1659(first_number, second_number):\n```", "sample_id": "python_medium_d4d700d7", "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_v1022):\n```", "sample_id": "python_hard_1c30ced6", "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 calc_v546(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v546(first_number, second_number):\n```", "sample_id": "python_medium_6cab526d", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef add_v367(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v367(a: int, b: int) -> int:\n```", "sample_id": "python_medium_c52bab06", "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_v1202():\n # Buggy: /\n x = 10\n 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_v1202():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_2b974623", "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\nImprove the code style and readability of this function\n\nInput code:\n```python\nresult = very_long_function_call_v1572(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1572(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_c5c96727", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v719(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v719(first_number, second_number):\n```", "sample_id": "python_easy_598eb90a", "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_v191(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v191(a: int, b: int) -> int:\n```", "sample_id": "python_easy_67cd9e73", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1491():\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_v1491():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_4a58c1df", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python function\n\nInput code:\n```python\ndef function_v1424():\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_v1424():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_054d6aac", "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 merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.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\ndef fib(n):\n if n <= 1:\n return n\n return fib(n-1) + fib(n-2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: cache results\n\n**Improved code:**\n```python\nfrom functools import lru_cache\n\n@lru_cache(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\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_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\nRefactor this code to use dictionary comprehension\n\nInput code:\n```python\nresult = {}\nfor key, value in items:\n result[key] = value * 2\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use dictionary comprehension 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_v1583):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1583):\n if condition:\n break\n```", "sample_id": "python_medium_4a86716c", "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 search function implementation\n\nInput code:\n```python\nfor i in range(n_v354):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v354):\n if condition:\n break\n```", "sample_id": "python_medium_de0ccd6a", "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\nresult = very_long_function_call_v1909(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1909(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_12029284", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v1455():\n # Buggy: /\n x = 10\n 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_v1455():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_4822110c", "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 use enumerate\n\nInput code:\n```python\nfor i in range(len(items)):\n print(i, items[i])\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use enumerate for 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_v650():\n # Buggy: ==\n x = 10\n 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_v650():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_20fc75aa", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v845(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v845(first_number, second_number):\n```", "sample_id": "python_medium_d9d1f06f", "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_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_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\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v1312(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v1312(first_number, second_number):\n```", "sample_id": "python_hard_decf1265", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this sorting algorithm implementation\n\nInput code:\n```python\nfor i in range(n_v1651):\n for j in range(n_v1651):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1651):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_41e74d0f", "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 DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n 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_v147):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v147):\n if condition:\n break\n```", "sample_id": "python_hard_78f26302", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v922):\n for j in range(n_v922):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v922):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_f91a1e0e", "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 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\nOptimize this recursion implementation\n\nInput code:\n```python\nfor i in range(n_v372):\n for j in range(n_v372):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v372):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_a25dc22f", "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\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\nImprove the code style and readability of this module\n\nInput code:\n```python\nresult = very_long_function_call_v1692(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1692(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_eb0603db", "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_medium_cb24a338", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this loop implementation\n\nInput code:\n```python\nfor i in range(n_v1056):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1056):\n if condition:\n break\n```", "sample_id": "python_hard_3b79397a", "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\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 quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if 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\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\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 binary search in Python\n\nInput code:\n```python\ndef binary_search(arr, target):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented binary search algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef binary_search(arr, target):\n left, right = 0, len(arr) - 1\n \n while left <= right:\n mid = (left + right) // 2\n if arr[mid] == target:\n return 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\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v897():\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_v897():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_easy_28aba520", "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 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\nresult = []\nfor x in list:\n result.append(x*2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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_v1064(a, b):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add type hints\n\n**Improved code:**\n```python\ndef add_v1064(a: int, b: int) -> int:\n```", "sample_id": "python_hard_0d72bf24", "language": "python", "difficulty": "hard"} {"text": "user\nOptimize this search function implementation\n\nInput code:\n```python\nfor i in range(n_v1768):\n for j in range(n_v1768):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v1768):\n for j in range(i+1, n):\n```", "sample_id": "python_medium_ecb4d631", "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\nfor i in range(n_v149):\n for j in range(n_v149):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: reduce complexity\n\n**Improved code:**\n```python\nfor i in range(n_v149):\n for j in range(i+1, n):\n```", "sample_id": "python_hard_93084447", "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_90db5188", "language": "python", "difficulty": "easy"} {"text": "user\nImprove the code style and readability of this module\n\nInput code:\n```python\ndef calc_v435(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v435(first_number, second_number):\n```", "sample_id": "python_easy_a6bd377e", "language": "python", "difficulty": "easy"} {"text": "user\nFix the bug in this Python conditional\n\nInput code:\n```python\ndef function_v1337():\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_v1337():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_e5c35465", "language": "python", "difficulty": "medium"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef process_v756():\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: add docstring\n\n**Improved code:**\n```python\ndef process_v756():\n \"\"\"Process the data and return results.\"\"\"\n```", "sample_id": "python_hard_9192c16c", "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_v1033(param1, param2, param3, param4, param5)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: split long lines\n\n**Improved code:**\n```python\nresult = very_long_function_call_v1033(\n param1, param2, param3,\n param4, param5\n)\n```", "sample_id": "python_hard_48c3625c", "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_medium_17de1f3f", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1578():\n # Buggy: ==\n x = 10\n 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_v1578():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_easy_81123e3c", "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_v72():\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_v72():\n # Fixed: range(n)\n x = 10\n result = x range(n) 2\n return result\n```", "sample_id": "python_medium_08643ba7", "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 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_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_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_hard_3988ac6d", "language": "python", "difficulty": "hard"} {"text": "user\nImprove the code style and readability of this class\n\nInput code:\n```python\ndef calc_v925(x, y):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Improved by: better variable names\n\n**Improved code:**\n```python\ndef calculate_sum_v925(first_number, second_number):\n```", "sample_id": "python_hard_25c0a866", "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_medium_0faa9843", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v905():\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_v905():\n # Fixed: f'{x}'\n x = 10\n result = x f'{x}' 2\n return result\n```", "sample_id": "python_medium_91251ca9", "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\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in 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_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python method\n\nInput code:\n```python\ndef function_v902():\n # Buggy: ==\n x = 10\n 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_v902():\n # Fixed: =\n x = 10\n result = x = 2\n return result\n```", "sample_id": "python_medium_67d528d4", "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\nImplement BFS in Python\n\nInput code:\n```python\ndef bfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented BFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef bfs(graph, start):\n visited = {start}\n queue = [start]\n \n while queue:\n vertex = queue.pop(0)\n print(vertex)\n \n for neighbor in 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\nif status == 1:\n```\nmodel\nI'll analyze this code and provide an improved version.\n\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 conditional\n\nInput code:\n```python\ndef function_v286():\n # Buggy: /\n x = 10\n 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_v286():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_medium_8f5885b3", "language": "python", "difficulty": "medium"} {"text": "user\nFix the bug in this Python class\n\nInput code:\n```python\ndef function_v1324():\n # Buggy: /\n x = 10\n 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_v1324():\n # Fixed: //\n x = 10\n result = x // 2\n return result\n```", "sample_id": "python_easy_42b7e55f", "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\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 quicksort in Python\n\nInput code:\n```python\ndef quicksort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented quicksort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef quicksort(arr):\n if len(arr) <= 1:\n return arr\n \n pivot = arr[len(arr) // 2]\n left = [x for x in arr if x < pivot]\n middle = [x for x in arr if 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_v1990):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v1990):\n if condition:\n break\n```", "sample_id": "python_hard_3c1644d2", "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_medium_6f2ce38b", "language": "python", "difficulty": "medium"} {"text": "user\nOptimize this data structure implementation\n\nInput code:\n```python\nfor i in range(n_v386):\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Optimized by: add early termination\n\n**Improved code:**\n```python\nfor i in range(n_v386):\n if condition:\n break\n```", "sample_id": "python_hard_73b47908", "language": "python", "difficulty": "hard"} {"text": "user\nFix the bug in this Python loop\n\nInput code:\n```python\ndef function_v614():\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_v614():\n # Fixed: list.append(x)\n x = 10\n result = x list.append(x) 2\n return result\n```", "sample_id": "python_easy_3abe66a5", "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 DFS in Python\n\nInput code:\n```python\ndef dfs(graph, start):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented DFS algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef dfs(graph, start, visited=None):\n if visited is None:\n visited = set()\n \n visited.add(start)\n print(start)\n \n 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 extract method\n\nInput code:\n```python\ndef process_data(data):\n # validation\n if not data:\n return None\n if len(data) < 10:\n return None\n # processing\n result = []\n for item in data:\n result.append(item * 2)\n return result\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to extract method for better readability and performance.\n\n**Improved code:**\n```python\ndef process_data(data):\n if not _is_valid_data(data):\n return None\n return _transform_data(data)\n\ndef _is_valid_data(data):\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\nImplement merge sort in Python\n\nInput code:\n```python\ndef merge_sort(arr):\n # TODO: implement\n pass\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Implemented merge sort algorithm with proper logic and edge case handling.\n\n**Improved code:**\n```python\ndef merge_sort(arr):\n if len(arr) <= 1:\n return arr\n \n mid = len(arr) // 2\n left = merge_sort(arr[:mid])\n right = merge_sort(arr[mid:])\n \n return merge(left, right)\n\ndef merge(left, right):\n result = []\n i = j = 0\n \n while i < len(left) and j < len(right):\n if left[i] <= right[j]:\n result.append(left[i])\n i += 1\n else:\n result.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 use list comprehension\n\nInput code:\n```python\nresult = []\nfor i in range(10):\n if i % 2 == 0:\n result.append(i ** 2)\n```\nmodel\nI'll analyze this code and provide an improved version.\n\n**Analysis:** Refactored to use list comprehension for better readability 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"}