mypy
https://github.com/python/mypy
Python
Optional static typing for Python
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- Issues
- Possibly-undefined: allow assertions on the lengths of sequences
- Make it possible to use `modules` or `packages` configurations with `files`
- Incorrect handling of `import from` namespace package that spans site-packages and the source tree
- "Type variable is invalid as target for type alias" error on new union syntax when not using `TypeAlias` type
- Misleading warning message when using ABCMeta instead of Protocol
- Accessing dunders via type object produces TypeVar clashes
- Metaclass conflict when combine class with a custom metaclass and str class
- Type narrowing in while loop
- Erroneous error about incompatible return value in generic function
- No recognition of concretized type for generic in method's self
- Docs
- Python not yet supported