mypy
https://github.com/python/mypy
Python
Optional static typing for Python
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- Issues
- A `class MyCallable(Protocol[T]): def __call__(self) -> T: ...` behaves differently, and worse, than a `Callable[[], T]` for the purposes of type inference.
- constrained TypeVar does not allow default of one of the constraint choices
- Fix `[func-returns-value]` not being trigged when calling decorated functions
- Type narrowed to `Never` when using `TypeIs` with union of callables
- Make cache more agnostic to venvs
- mypy caching hysteresis
- false positive errors when calling operator override that returns `Never` from another function that returns `Never`
- `dmypy status` reports as "stuck" when it's busy checking files
- Stubs and use of `@deprecated` names
- Add support for literal addition
- Docs
- Python not yet supported