mypy
https://github.com/python/mypy
Python
Optional static typing for Python
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- Issues
- Type not narrowed on `isinstance(obj, Callable)` check
- Assigning a variable from either of two optional variables
- Make type checking mypy more straightforward for new contributors
- bug: strict = true is incompatible with per-module configuration
- Inference for Literal arguments not handled
- warn when default values on overloads differ from implementation signature
- "Overloaded function implementation does not accept all possible arguments"
- make type annotations on overload implementation signature optional
- if MYPY guarding an always-return block v. unreachable
- Feature proposal: Warn when narrowing to a mutable type
- Docs
- Python not yet supported