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The dataclass decorator isn't there to make the type checkers understand the class. Its main purpose is to automatically implement trivial methods like the cons
by maleldil 1y ago
The dataclass decorator isn't there to make the type checkers understand the class. Its main purpose is to automatically implement trivial methods like the constructor, equality, repr, etc. The type hints make this more convenient, but something similar already existed with attrs.
- bvrmn 1y agoIt's literally stated in the PEP: https://peps.python.org/pep-0681/ https://peps.python.org/pep-0681/ Also: https://github.com/python/mypy/blob/501a07b45af8e44eda665e53526fc590dc5a014e/mypy/semanal_shared.py#L376 https://github.com/python/mypy/blob/501a07b45af8e44eda665e53... Also did you know mypy ignores typing of class decorators? You simply can't return a different type other than type[thisclass].