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README.md
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# codetransformer-python-s
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## Model Overview
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The `codetransformer-python-s` is a small-scale, decoder-only Transformer model fine-tuned specifically for generating and completing Python code. It is designed for speed and efficiency in environments where resource constraints are a concern, while maintaining a high degree of syntactic correctness and logical coherence for common programming tasks.
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## Model Architecture
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* **Base Model:** Adapted from a scaled-down GPT-2 variant (similar to 350M parameter size).
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* **Architecture:** Causal Transformer (Decoder-only stack).
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* **Task:** Causal Language Modeling. It predicts the next token (line of code, function call, variable name, etc.) given the preceding context.
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* **Training Data:** Curated dataset of publicly available, high-quality Python repositories and popular algorithm implementations.
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## Intended Use
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* **Code Completion:** Providing intelligent, multi-line suggestions within IDEs and code editors.
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* **Function Generation:** Generating boilerplate or utility functions from descriptive docstrings or comments.
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* **Educational Tool:** Assisting new programmers by demonstrating common language patterns and idiomatic Python usage.
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## Limitations and Ethical Considerations
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* **Logic Errors:** The model is a text predictor, not a debugger or compiler. Generated code may contain subtle logical or runtime errors.
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* **Security Risks:** The model may reproduce insecure or vulnerable code patterns learned from its training data. **Generated code must be thoroughly audited before deployment.**
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* **Training Data Dependency:** It is heavily biased towards patterns present in its training corpus and may struggle with highly novel algorithms or external library APIs it has not encountered.
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* **Size Limitation:** Being a small model ('-s'), it has a limited context window (`n_ctx=1024`) and may fail to maintain consistency across very large files or complex projects.
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## Example Code
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To generate Python code given a function signature:
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```python
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from transformers import AutoTokenizer, AutoModelForCausalLM
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# Load model and tokenizer
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model_name = "YourOrg/codetransformer-python-s"
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tokenizer = AutoTokenizer.from_pretrained(model_name)
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model = AutoModelForCausalLM.from_pretrained(model_name)
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# Define the prompt
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prompt = "def calculate_factorial(n):\n \"\"\"Calculates the factorial of a positive integer n.\"\"\"\n if n == 0:"
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input_ids = tokenizer.encode(prompt, return_tensors='pt')
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# Generate code
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output = model.generate(
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input_ids,
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max_length=100,
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num_return_sequences=1,
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do_sample=True,
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temperature=0.4, # Lower temperature for less creative, more deterministic code
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top_p=0.9,
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pad_token_id=tokenizer.eos_token_id
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)
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generated_code = tokenizer.decode(output[0], skip_special_tokens=False)
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print("--- Generated Code Snippet ---")
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# Only the generated completion is valuable, but the full sequence is returned
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print(generated_code)
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