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generate-docstrings

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Create docstrings for functions and classes. Use when documenting code APIs.

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Generate Docstrings

Write comprehensive docstrings for functions and classes following standard formats (Google, NumPy, reStructuredText).

When to Use

  • Adding documentation to undocumented functions
  • Improving code documentation completeness
  • Ensuring consistent docstring format
  • Supporting API documentation generation

Quick Reference

# Google-style docstring format
def matrix_multiply(a: ExTensor, b: ExTensor) -> ExTensor:
    """Multiply two matrices using optimized Mojo kernels.

    Args:
        a: First matrix (shape: m x n)
        b: Second matrix (shape: n x k)

    Returns:
        Product matrix (shape: m x k)

    Raises:
        ValueError: If matrix dimensions don't align for multiplication

    Example:
        ```mojo
        >> a = ExTensor([[1, 2], [3, 4]], DType.float32)
        >>> b = ExTensor([[1, 0], [0, 1]], DType.float32)
        >>> c = matrix_multiply(a, b)
        ```
    """
    ...

Workflow

  1. Analyze function: Understand purpose, parameters, return value
  2. Choose format: Select docstring style (Google is recommended)
  3. Write summary: Clear one-line description
  4. Document parameters: Type, description, constraints
  5. Document return: Type and description of return value
  6. Add examples: Practical usage examples

Output Format

Docstring structure:

  • One-line summary
  • Extended description (if needed)
  • Args section (parameter documentation)
  • Returns section (return value documentation)
  • Raises section (exceptions)
  • Examples section (usage examples)

References

  • See generate-api-docs skill for API documentation generation
  • See Google Python Style Guide for docstring conventions
  • See PEP 257 for Python docstring conventions