Sync typeshed #14902
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Sync typeshed #14902
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Source commit: python/typeshed@a544b75
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)
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Mypy_primer analysis
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AlexWaygood
commented
Mar 15, 2023
Comment on lines
-271
to
+273
| _program.py:5: error: Argument 1 to "write" of "IO" has incompatible type "bytes"; expected "str" | ||
| _program.py:5: error: No overload variant of "write" of "IO" matches argument type "bytes" | ||
| _program.py:5: note: Possible overload variants: | ||
| _program.py:5: note: def write(self, str, /) -> int |
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The change in error message here is slightly unfortunate; the previous error message was better. It's due to a combination of python/typeshed#9861, which made IO.write an overloaded method, and #14882, which means that mypy now correctly deduces that only one overload applies in this specific situation.
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Diff from mypy_primer, showing the effect of this PR on open source code: sympy (https://github.com/sympy/sympy)
+ sympy/polys/solvers.py:34: error: Cannot infer type of lambda [misc]
+ sympy/polys/solvers.py:34: error: Argument 1 to "staticmethod" has incompatible type "Callable[[Any], Any]"; expected "Callable[[Any, Any, Any, Any, Any, Any], Any]" [arg-type]
psycopg (https://github.com/psycopg/psycopg)
+ psycopg/psycopg/copy.py:464: error: Unused "type: ignore" comment
Tanjun (https://github.com/FasterSpeeding/Tanjun)
- tanjun/conversion.py:123: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:123: error: Untyped decorator makes function "async_caches" untyped [misc]
- tanjun/conversion.py:129: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:129: error: Untyped decorator makes function "cache_components" untyped [misc]
- tanjun/conversion.py:152: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:152: error: Untyped decorator makes function "intents" untyped [misc]
- tanjun/conversion.py:390: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:454: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:508: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:557: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:602: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:675: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:732: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:784: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:839: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/conversion.py:951: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/parsing.py:463: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/clients.py:1342: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/clients.py:1342: error: Untyped decorator makes function "set_global_commands" untyped [misc]
- tanjun/annotations.py:524: error: Module has no attribute "deprecated" [attr-defined]
- tanjun/annotations.py:524: error: Untyped decorator makes function "default" untyped [misc]
cwltool (https://github.com/common-workflow-language/cwltool)
+ cwltool/main.py:963: error: Unused "type: ignore[arg-type]" comment
discord.py (https://github.com/Rapptz/discord.py)
- discord/ext/commands/cog.py:500: error: Incompatible types in assignment (expression has type "Callable[..., Any]", variable has type "FuncT") [assignment]
+ discord/ext/commands/cog.py:500: error: Incompatible types in assignment (expression has type "Callable[[VarArg(Any), KwArg(Any)], Any]", variable has type "FuncT") [assignment]
rich (https://github.com/Textualize/rich)
+ rich/progress.py:173: error: Definition of "writelines" in base class "IOBase" is incompatible with definition in base class "IO" [misc]
pydantic (https://github.com/samuelcolvin/pydantic)
+ pydantic/_internal/_decorators.py:204: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/_internal/_decorators.py:210: error: Need type annotation for "f_cls" [var-annotated]
+ pydantic/decorators.py:91: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:102: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:113: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:123: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:145: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:161: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:170: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:179: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:189: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:204: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/decorators.py:227: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
+ pydantic/main.py:44: error: "classmethod" expects 3 type arguments, but 1 given [type-arg]
urllib3 (https://github.com/urllib3/urllib3)
+ test/test_ssltransport.py:443: error: Unused "type: ignore" comment
+ test/test_ssltransport.py:443: error: No overload variant of "write" of "IO" matches argument type "bytes" [call-overload]
+ test/test_ssltransport.py:443: note: Error code "call-overload" not covered by "type: ignore" comment
+ test/test_ssltransport.py:443: note: Possible overload variants:
+ test/test_ssltransport.py:443: note: def write(self, str, /) -> int
+ test/test_ssltransport.py:480: error: No overload variant of "write" of "IO" matches argument type "str" [call-overload]
+ test/test_ssltransport.py:480: note: Error code "call-overload" not covered by "type: ignore" comment
+ test/test_ssltransport.py:480: note: Possible overload variants:
+ test/test_ssltransport.py:480: note: def write(self, Union[bytes, Union[bytearray, memoryview, array[Any], mmap, _CData, PickleBuffer]], /) -> int
+ test/test_ssltransport.py:480: note: def write(self, bytes, /) -> int
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Source commit: python/typeshed@a544b75.
The automated PR failed again last night due to merge conflicts caused by python/typeshed@28dd6c1: https://github.com/python/mypy/actions/runs/4421332699/jobs/7752003840#step:5:55
misc/sync-typeshed.pyscript.