Sync typeshed #17619
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Sync typeshed #17619
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Source commit: python/typeshed@4ef2d66
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)
… checking: #13987 (comment) A manual cherry-pick of e437cdf.
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Diff from mypy_primer, showing the effect of this PR on open source code: pip (https://github.com/pypa/pip)
src/pip/_internal/cli/parser.py:292: error: Return type "None" of "error" incompatible with return type "Never" in supertype "OptionParser" [override]
core (https://github.com/home-assistant/core)
homeassistant/runner.py:179: error: Cannot assign to final name "_USE_POSIX_SPAWN" [misc]
mkdocs (https://github.com/mkdocs/mkdocs)
mkdocs/tests/__init__.py:4: error: Cannot assign to final name "_MAX_LENGTH" [misc]
anyio (https://github.com/agronholm/anyio)
src/anyio/_backends/_asyncio.py:335: error: Argument 1 to "getcoroutinestate" has incompatible type "Coroutine[Any, Any, Any] | None"; expected "Coroutine[Any, Any, Any]" [arg-type]
src/anyio/_backends/_asyncio.py:1845: error: Argument 4 to "__init__" of "TaskInfo" has incompatible type "Coroutine[Any, Any, Any] | None"; expected "Generator[Any, Any, Any] | Awaitable[Any]" [arg-type]
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Sync typeshed
Source commit:
python/typeshed@4ef2d66
Note that you will need to close and re-open the PR in order to trigger CI.