Change the return type of __reduce__ and __reduce_ex__ to Union[str, Tuple[Any, ...]]#3453
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srittau merged 1 commit intopython:masterfrom Nov 10, 2019
MSeifert04:reduce-return-union
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Change the return type of __reduce__ and __reduce_ex__ to Union[str, Tuple[Any, ...]]#3453srittau merged 1 commit intopython:masterfrom MSeifert04:reduce-return-union
srittau merged 1 commit intopython:masterfrom
MSeifert04:reduce-return-union
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srittau
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Nov 10, 2019
stdlib/2and3/builtins.pyi
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| def __sizeof__(self) -> int: ... | ||
| def __reduce__(self) -> Tuple[Any, ...]: ... | ||
| def __reduce__(self) -> Union[str, Tuple[Any, ...]]: ... | ||
| def __reduce_ex__(self, protocol: int) -> Tuple[Any, ...]: ... |
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Could you also add this to __reduce_ex__?
…Tuple[Any, ...]] This allows subclasses to return strings (which are allowed) from these methods without having mypy throwing an error.
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This is fine in this case. Normally we prefer non-Union return types, because it means the caller needs to use |
srittau
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Nov 10, 2019
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Ah, thank you for the clarification! |
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This allows subclasses to return strings (which are allowed) from these
methods without having mypy throwing an error.
This fixes #3452
However this violates the following item from the Contributing file: