Sync typeshed #14449
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Sync typeshed #14449
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Source commit: python/typeshed@ea0ae21
This is allegedly causing large performance problems, see 13821 typeshed/8231 had zero hits on mypy_primer, so it's not the worst thing to undo. Patching this in typeshed also feels weird, since there's a more general soundness issue. If a typevar has a bound or constraint, we might not want to solve it to a Literal. If we can confirm the performance regression or fix the unsoundness within mypy, I might pursue upstreaming this in typeshed. (Reminder: add this to the sync_typeshed script once merged)
Since the plugin provides superior type checking: #13987 (comment)
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Diff from mypy_primer, showing the effect of this PR on open source code: manticore (https://github.com/trailofbits/manticore)
- manticore/core/workspace.py:220: error: Argument 1 to "exists" has incompatible type "Optional[str]"; expected "Union[Union[str, bytes, PathLike[str], PathLike[bytes]], int]" [arg-type]
+ manticore/core/workspace.py:220: error: Argument 1 to "exists" has incompatible type "Optional[str]"; expected "Union[int, Union[str, bytes, PathLike[str], PathLike[bytes]]]" [arg-type]
- manticore/core/workspace.py:221: error: Argument 1 to "isdir" has incompatible type "Optional[str]"; expected "Union[Union[str, bytes, PathLike[str], PathLike[bytes]], int]" [arg-type]
+ manticore/core/workspace.py:221: error: Argument 1 to "isdir" has incompatible type "Optional[str]"; expected "Union[int, Union[str, bytes, PathLike[str], PathLike[bytes]]]" [arg-type]
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Weird that the union above doesn't get simplified, but doesn't seem like a problem. |
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Sync typeshed
Source commit:
python/typeshed@ea0ae21
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