mypy
https://github.com/python/mypy
Python
Optional static typing for Python
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- Issues
- Inconsistency in `reveal_type(some_type)`
- Literal slicing of a variable-length tuple does not work
- Unsoundly accepts generic function with generic mutable default parameter
- no warning when `dataclass` extends non-dataclass with an `__init__` method
- dmypy: Provide an option to make dmypy quieter.
- (🐞) the construction of a variable of `type`, applied with a type variable bound to a union, does not produce an type that is assignable to that type variable
- `singledispatch.register` doesn't typecheck registration of generic functions
- mypy doesnt use unitest.TestCase.assertIsInstance checks for type narrowing
- super() is analyzed differently from super(C, self) in generic subclass context
- lambda input type is `Any` when function type is a union, and no error when lambda does not satisfy any of the types in the union
- Docs
- Python not yet supported