Python Code Review with Modern Typing

Modern Python 3.12 type annotations use built-in generic types (list, dict, set, tuple, type) instead of typing module imports, and the union operator | instead of Union or Optional. This Skill audits your code to flag deprecated typing imports and suggest their built-in equivalents, ensuring compliance with current Python conventions.

Yes. This Skill systematically audits type annotations across function parameters, return types, methods, and class attributes, enforcing built-in generics and modern syntax while integrating with static type checkers like mypy for strict type checking validation.

typing.List is deprecated in Python 3.12+; the built-in list type now supports generic syntax directly (list[int]) without imports. This Skill identifies and flags typing.List, typing.Dict, typing.Optional usage and recommends the modern built-in generic equivalents.

Python 3.12 supports the union operator | for type alternatives, making Optional[X] equivalent to X | None. This Skill audits your annotations, flags the deprecated Optional pattern, and guides conversion to modern | syntax for cleaner, more readable type hints.

Yes. This Skill is designed for refactoring existing code to modern typing standards and enforcing strict static type checking. It audits pull requests and new code against Python 3.12+ conventions, making it ideal for gradual migration of legacy codebases to strict typing.

This Skill flags typing module imports (typing.List, typing.Dict, typing.Optional, etc.) as deprecated under Python 3.12+ standards and rejects them during code review, recommending built-in generic equivalents and modern union syntax instead.