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Merged
merged 4 commits into from
Mar 16, 2024
Merged

Sync typeshed #17039

merged 4 commits into from
Mar 16, 2024

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AlexWaygood
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Source commit: python/typeshed@ff7caa3. The automated sync failed the other day due to merge conflicts with the cherry-picked commits: https://github.com/python/mypy/actions/runs/8289184951

⚠️ Remember to use "rebase and merge" rather than "squash and merge" for this PR, so that we can easily update the commit hashes to cherry-pick in the misc/sync-typeshed.py script. ⚠️

AlexWaygood and others added 4 commits March 16, 2024 12:40
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: python#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:70: error: Argument 1 of "format_description" is incompatible with supertype "HelpFormatter"; supertype defines the argument type as "str | None"  [override]
+ src/pip/_internal/cli/parser.py:70: note: This violates the Liskov substitution principle
+ src/pip/_internal/cli/parser.py:70: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
+ src/pip/_internal/cli/parser.py:88: error: Argument 1 of "format_epilog" is incompatible with supertype "HelpFormatter"; supertype defines the argument type as "str | None"  [override]
+ src/pip/_internal/cli/parser.py:88: note: This violates the Liskov substitution principle
+ src/pip/_internal/cli/parser.py:88: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides

prefect (https://github.com/PrefectHQ/prefect)
- src/prefect/utilities/pydantic.py:184: note:     def __new__(cls: type[type], object, /) -> type
+ src/prefect/utilities/pydantic.py:184: note:     def __new__(type[type], object, /) -> type
- src/prefect/utilities/pydantic.py:184: note:     def [_typeshed.Self] __new__(cls: type[_typeshed.Self], str, tuple[type, ...], dict[str, Any], /, **kwds: Any) -> _typeshed.Self
+ src/prefect/utilities/pydantic.py:184: note:     def [_typeshed.Self] __new__(type[_typeshed.Self], str, tuple[type, ...], dict[str, Any], /, **kwds: Any) -> _typeshed.Self
- src/prefect/utilities/pydantic.py:186: note:     def __new__(cls: type[type], object, /) -> type
+ src/prefect/utilities/pydantic.py:186: note:     def __new__(type[type], object, /) -> type
- src/prefect/utilities/pydantic.py:186: note:     def [_typeshed.Self] __new__(cls: type[_typeshed.Self], str, tuple[type, ...], dict[str, Any], /, **kwds: Any) -> _typeshed.Self
+ src/prefect/utilities/pydantic.py:186: note:     def [_typeshed.Self] __new__(type[_typeshed.Self], str, tuple[type, ...], dict[str, Any], /, **kwds: Any) -> _typeshed.Self

pyinstrument (https://github.com/joerick/pyinstrument)
+ pyinstrument/renderers/jsonrenderer.py:16: error: Unused "type: ignore" comment  [unused-ignore]

@AlexWaygood
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The pip hit comes from python/typeshed#11599. The unused type: ignore in pyinstrument comes from python/typeshed#11549. The prefect hits are just an error message changing slightly.

@JelleZijlstra JelleZijlstra merged commit 61a4900 into python:master Mar 16, 2024
@AlexWaygood AlexWaygood deleted the mypybot/sync-typeshed branch March 16, 2024 13:44
JelleZijlstra pushed a commit that referenced this pull request Mar 16, 2024
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3 participants