Skip to content

Issues: python/mypy

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

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Clear current search query, filters, and sorts
37 Open 85 Closed
37 Open 85 Closed
Author
Filter by author
Loading
Label
Filter by label
Loading
Use alt + click/return to exclude labels
or ⇧ + click/return for logical OR
Projects
Filter by project
Loading
Milestones
Filter by milestone
Loading
Assignee
Filter by who’s assigned
Sort
Sort by
Newest Oldest Most commented Least commented Recently updated Least recently updated Best match
Most reactions
👍 👎 😄 🎉 😕 ❤️ 🚀 👀

Issues list

[1.12, 1.13] Regression in enum narrowing bug mypy got something wrong topic-enum topic-literal-types topic-type-narrowing Conditional type narrowing / binder topic-union-types
#18029 opened Oct 24, 2024 by Fred-si
2
False negative when lvalue has union type affects-mypyc bug mypy got something wrong topic-union-types
#17859 opened Oct 1, 2024 by JukkaL
Generic matching error when tuple-unpacking result bug mypy got something wrong topic-inference When to infer types or require explicit annotations topic-type-variables topic-union-types
#16310 opened Oct 21, 2023 by msullivan
Type inference for max() "tainted" by default bug mypy got something wrong topic-type-variables topic-union-types
#16267 opened Oct 15, 2023 by jwodder
3
list unpacking: List or tuple expected as variadic arguments bug mypy got something wrong topic-type-context Type context / bidirectional inference topic-union-types
#14891 opened Mar 13, 2023 by giodall
3
Union of Literals as key in union of TypedDict false positive bug mypy got something wrong topic-typed-dict topic-union-types
#14459 opened Jan 16, 2023 by connesy
And of isinstances / typeguards containing unions bug mypy got something wrong topic-type-narrowing Conditional type narrowing / binder topic-union-types
#14434 opened Jan 12, 2023 by Anonymous-Stranger
2
Incorrect handling of unions of generics bug mypy got something wrong topic-type-variables topic-union-types
#14403 opened Jan 6, 2023 by hauntsaninja
1
(🎁) Perform 'union math' on non overloaded calls feature topic-type-variables topic-union-types
#13493 opened Aug 24, 2022 by KotlinIsland
Cannot deduce generic type of bound TypeVar through Type of Union bug mypy got something wrong topic-type-variables topic-union-types
#12115 opened Feb 2, 2022 by bbatliner
Argument type Union[T, List[T]] fails to infer constaints bug mypy got something wrong topic-union-types
#11149 opened Sep 20, 2021 by sobolevn
2
Mypy emits two conflicting results for reveal_type bug mypy got something wrong topic-reveal-type reveal_type() and reveal_locals() topic-union-types
#10739 opened Jun 29, 2021 by akaptur
1
4
MyPy fails on Union[str, int] < Union[str, int] when underlying type is known bug mypy got something wrong topic-type-narrowing Conditional type narrowing / binder topic-union-types
#10380 opened Apr 28, 2021 by muggenhor
4
nested isinstances lose type information bug mypy got something wrong false-positive mypy gave an error on correct code topic-join-v-union Using join vs. using unions topic-type-narrowing Conditional type narrowing / binder topic-union-types
#10146 opened Feb 27, 2021 by Akuli
2
Cannot access custom property of union type bug mypy got something wrong false-positive mypy gave an error on correct code priority-1-normal topic-descriptors Properties, class vs. instance attributes topic-runtime-semantics mypy doesn't model runtime semantics correctly topic-union-types
#9053 opened Jun 26, 2020 by nielsbuwen
Get rid of make_simplified_union() except in error messages bug mypy got something wrong performance priority-1-normal refactoring Changing mypy's internals topic-union-types
#8624 opened Apr 3, 2020 by ilevkivskyi
2
Type variables in Callables don't unify bug mypy got something wrong false-positive mypy gave an error on correct code priority-1-normal topic-type-variables topic-union-types
#8275 opened Jan 11, 2020 by maxrothman
9
TypedDict doesn't support Union[Literal] as key "string literal" bug mypy got something wrong priority-2-low topic-literal-types topic-typed-dict topic-union-types
#7752 opened Oct 19, 2019 by b0g3r
1
Union subtyping doesn't work with covariant type constructors Tuple and Callable bug mypy got something wrong false-positive mypy gave an error on correct code priority-0-high topic-union-types
#7187 opened Jul 9, 2019 by ilevkivskyi
6
"multiple values for keyword argument" with star expansion bug mypy got something wrong false-positive mypy gave an error on correct code priority-1-normal topic-union-types
#6799 opened May 8, 2019 by Eugeny
10
Can't infer T where Optional[T] is Optional[MyUnion] bug mypy got something wrong false-positive mypy gave an error on correct code priority-1-normal topic-type-variables topic-union-types
#6751 opened May 1, 2019 by ghost
5
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
4
Generics is not supported with some operators bug mypy got something wrong priority-1-normal topic-type-variables topic-union-types
#6157 opened Jan 7, 2019 by appraveen
1
Union types for dict keys are not inferred in union context bug mypy got something wrong false-positive mypy gave an error on correct code needs discussion priority-1-normal topic-join-v-union Using join vs. using unions topic-union-types
#6079 opened Dec 17, 2018 by bryanforbes
1
Mypy is still too eager about outer context bug mypy got something wrong false-positive mypy gave an error on correct code priority-1-normal topic-type-variables topic-union-types
#5874 opened Nov 8, 2018 by ilevkivskyi
3
ProTip! Find all open issues with in progress development work with linked:pr.