mypy
https://github.com/python/mypy
Python
Optional static typing for Python
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- Issues
- Allow setting final instance attributes in __new__
- Safe cast (upcast)
- Fine-grained incremental step does lots of spurious stat() calls
- Reusing variable name in different scopes
- mypy gives 'not defined' error for use after global declaration
- Give better error message if type inference fails because of unsatisfiable upper bound
- Default values for generic attributes are unsafe
- error in argument when using chained function-call
- Prefer `__new__` over `__init__` for determining callable type of a class
- mypy fails to recognize functions as generators when `sys.platform` is used in conditions
- Docs
- Python not yet supported