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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

mypy does not recognize sys.platform with ternary operator feature priority-2-low topic-ternary-expression a if b else c
#13003 opened Jun 21, 2022 by amatyukhin0 updated Aug 29, 2024
2
Rust style force handling of return value feature priority-2-low
#6936 opened Jun 4, 2019 by runfalk updated Jul 29, 2024
24
Looping through literals not typed correctly feature priority-2-low topic-literal-types topic-typed-dict
#9230 opened Jul 29, 2020 by rggjan updated Jul 12, 2024
17
(🐞) --update-data removes escapes bug mypy got something wrong priority-2-low topic-tests
#17465 opened Jul 2, 2024 by KotlinIsland updated Jul 3, 2024
Direction of comparison operator in error message does not depend on direction in code bug mypy got something wrong priority-2-low
#17460 opened Jul 1, 2024 by jevandezande updated Jul 2, 2024
Types not added to binder on initial assignment feature priority-2-low topic-strict-optional topic-union-types
#2008 opened Aug 10, 2016 by ddfisher updated May 13, 2024
37
Support __call__ on metaclasses bug mypy got something wrong priority-2-low topic-protocols
#14122 opened Nov 17, 2022 by ilevkivskyi updated Apr 30, 2024
(🎁) Allow if expression / conditional base in class def feature priority-2-low semantic-analyzer Problems that happen during semantic analysis topic-ternary-expression a if b else c
#12445 opened Mar 25, 2022 by KotlinIsland updated Apr 23, 2024
5
Better alternative for algebraic data types needs discussion priority-2-low topic-union-types
#2464 opened Nov 16, 2016 by JukkaL updated Apr 2, 2024
21
Tuple-like Sequence feature needs discussion priority-2-low
#8441 opened Feb 25, 2020 by llchan updated Mar 1, 2024
4
mypy does not recognize os.name feature priority-2-low
#13002 opened Jun 21, 2022 by amatyukhin0 updated Feb 21, 2024
1
Request: opt-in rule preventing duplicate error codes feature priority-2-low topic-type-ignore # type: ignore comments
#16885 opened Feb 6, 2024 by jamesbraza updated Feb 11, 2024
Bad error message: mypy reports 'Name is not defined' when using an object member as super class of another class good-first-issue priority-2-low
#8603 opened Mar 30, 2020 by sandrinr updated Feb 6, 2024
24
Wrong type inference for class with metaclass that acts as descriptor bug mypy got something wrong priority-2-low topic-descriptors Properties, class vs. instance attributes topic-metaclasses
#10964 opened Aug 10, 2021 by Jackenmen updated Feb 4, 2024
2
Conditional expression produces different result than if (w/ callable()) bug mypy got something wrong priority-2-low topic-ternary-expression a if b else c topic-type-narrowing Conditional type narrowing / binder
#8265 opened Jan 9, 2020 by paravoid updated Jan 9, 2024
2
"Can only assign concrete classes to a variable of type "Type[MyProtocol]"" is hard to debug bug mypy got something wrong diagnostics priority-2-low topic-error-reporting How we report errors topic-protocols topic-usability
#8836 opened May 16, 2020 by grahamc updated Nov 13, 2023
4
Recognizing expressions with a constant value. feature priority-2-low topic-literal-types
#12583 opened Apr 14, 2022 by mrolle45 updated Oct 8, 2023
2
no error when subtyping string literal bug mypy got something wrong priority-2-low topic-runtime-semantics mypy doesn't model runtime semantics correctly
#16195 opened Sep 28, 2023 by DetachHead updated Sep 28, 2023
isinstance(x, Tuple) fails when equivalent expressions don't bug mypy got something wrong false-positive mypy gave an error on correct code priority-2-low topic-runtime-semantics mypy doesn't model runtime semantics correctly
#6680 opened Apr 16, 2019 by lbenezriravin updated Sep 22, 2023
11
Disallow access to instance variable via class needs discussion priority-2-low
#240 opened Jul 15, 2013 by JukkaL updated Sep 11, 2023
5
Lambda as RHS for operator always gets inferred as Any bug mypy got something wrong priority-2-low topic-disallow-any The disallow-any-* family of flags
#5843 opened Oct 26, 2018 by amarshall updated Sep 4, 2023
Same variable with a union type is not checked in "lockstep" within an expression false-positive mypy gave an error on correct code feature priority-2-low topic-union-types
#6478 opened Feb 25, 2019 by Hanaasagi updated Aug 28, 2023
4
What if duck types are unions of all the ducklings feature priority-2-low
#11516 opened Nov 11, 2021 by KotlinIsland updated Aug 28, 2023
9
More principled solution for universal quantificatoin of non-Callable types feature priority-2-low topic-paramspec PEP 612, ParamSpec, Concatenate topic-type-variables
#15909 opened Aug 18, 2023 by ilevkivskyi updated Aug 26, 2023
False positive with disallow-any-explicit and ... in Callable in bound of type var bug mypy got something wrong priority-2-low topic-calls Function calls, *args, **kwargs, defaults topic-disallow-any The disallow-any-* family of flags
#9496 opened Sep 28, 2020 by KotlinIsland updated Aug 13, 2023
8
ProTip! Updated in the last three days: updated:>2024-09-19.