mypy
https://github.com/python/mypy
Python
Optional static typing for Python
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- Issues
- Bad circular imports are not rejected
- Inferring an optional type when first initializer uses non-optional type
- Type variables bound by a generic class make no sense in static or class methods.
- defining self.__call__ makes the class callable when it isn't
- Unsupported operand types using += with floats initialized to 0 (not 0.0)
- cannot infer (or provide) types of lambdas
- Strict optional doesn't recognize "None in (...)" tests
- Unsupported operand types for + (List[A] and List[B]) when B extends A
- Soundness bugs with Callable[..., T] and partial
- Add flag prohibiting annotation by Any resulting from an unanalyzed module
- Docs
- Python not yet supported