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Issues: python/mypy

Announcement issue for plugin API changes
#6617 opened Apr 3, 2019 by msullivan
Open 15
Python 3.13 tracking issue
#17264 opened May 18, 2024 by hauntsaninja
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Issues list

Unexpected "error: Slice index must be an integer or None" bug mypy got something wrong false-positive mypy gave an error on correct code feature needs discussion priority-0-high
#2410 opened Nov 7, 2016 by sametmax
33
stubgen & pybind11: can we make them play nice(r)? bug mypy got something wrong topic-stubgen
#16306 opened Oct 21, 2023 by rwgk
24
cached runs of dmypy stop reporting "unused type: ignore" warnings bug mypy got something wrong topic-daemon dmypy topic-type-ignore # type: ignore comments
#9655 opened Oct 28, 2020 by rggjan
22
Decorated function makes type-check fail if done inside of method from the class bug mypy got something wrong
#9266 opened Aug 5, 2020 by fabioz
21
mypy can't infer type for functools.reduce bug mypy got something wrong false-positive mypy gave an error on correct code priority-1-normal topic-type-variables
#4673 opened Mar 2, 2018 by kamahen
20
Editable installs are not recognized as having typing when using py.typed (setuptools v64 issue) bug mypy got something wrong
#13392 opened Aug 12, 2022 by cmeyer
20
New semantic analyzer: Namespace package with __init__.py breaks analysis bug mypy got something wrong false-positive mypy gave an error on correct code needs discussion semantic-analyzer Problems that happen during semantic analysis topic-usability
#7029 opened Jun 20, 2019 by fireundubh
19
Type[T] -> T has a strange behaviour bug mypy got something wrong priority-1-normal topic-type-form TypeForm might fix this topic-usability
#9003 opened Jun 15, 2020 by ltworf
16
Disallow type[NoReturn] bug mypy got something wrong priority-2-low topic-pep-484
#11291 opened Oct 7, 2021 by DetachHead
15
mypy Type error for a class with an imported metaclass bug mypy got something wrong false-positive mypy gave an error on correct code priority-1-normal topic-metaclasses
#9185 opened Jul 21, 2020 by seanp2
15
List[<nothing>] error bug mypy got something wrong false-positive mypy gave an error on correct code priority-1-normal topic-type-context Type context / bidirectional inference topic-usability
#3283 opened Apr 29, 2017 by jcrmatos
14
Mypy incorrectly warns when passing literals as kwarg keywords bug mypy got something wrong
#10023 opened Feb 4, 2021 by nipunn1313
2
14
Regression: mypy thinks line is unreachable in 0.780 upwards, while (correctly) not showing a warning in 0.770 and below bug mypy got something wrong topic-reachability Detecting unreachable code topic-type-narrowing Conditional type narrowing / binder
#9457 opened Sep 18, 2020 by rggjan
14
type[Any] not considered Hashable bug mypy got something wrong
#11470 opened Nov 5, 2021 by KotlinIsland
1
14
Honor return type of __new__ even if not a subclass bug mypy got something wrong
#15182 opened May 4, 2023 by oscarbenjamin
14
NoReturn return type with singledispatch causing weird errors bug mypy got something wrong
#11727 opened Dec 13, 2021 by JukkaL
14
"Already defined" + "not defined" errors with SQLAlchemy 1.2 hybrid_property bug mypy got something wrong topic-descriptors Properties, class vs. instance attributes
#4430 opened Jan 5, 2018 by Deimos
13
TypeVar incompatible with constrained union bug mypy got something wrong
#9424 opened Sep 6, 2020 by NeilGirdhar
13
0.981 Introduces unnecessary build requirements bug mypy got something wrong
#14171 opened Nov 23, 2022 by dvzrv
1
13
Generic type inferred wrong; curious difference betweer aiter(f(x)) and c = f(x); aiter(c) bug mypy got something wrong topic-type-context Type context / bidirectional inference
#16376 opened Oct 31, 2023 by sliedes
13
Unpacking an iterable in a list comprehension leads to the type inferred as list[Any] bug mypy got something wrong good-second-issue
#15747 opened Jul 22, 2023 by hvenev
2
13
callables are inferred to be descriptors when they shouldn't always be, protocols are inferred to not be descriptors when maybe they should, and mypy converts between them with no error bug mypy got something wrong
#15189 opened May 5, 2023 by glyph
13
TypeGuard on self does not narrow associated TypeVars bug mypy got something wrong
#14425 opened Jan 10, 2023 by JosiahKane
13
False positive: No overload variant of "asdict" matches argument type "Type[DataclassInstance]" [call-overload] bug mypy got something wrong topic-dataclasses
#17550 opened Jul 21, 2024 by brianmedigate
13
Reject bound covariant type variable in an argument type bug mypy got something wrong priority-1-normal topic-type-variables
#734 opened Aug 9, 2015 by JukkaL
1
12
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