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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

Allow setting final instance attributes in __new__ feature priority-1-normal topic-final PEP 591
#5774 opened Oct 11, 2018 by ilevkivskyi
Many classes should be decorated as @final feature needs discussion topic-developer Issues relevant to mypy developers topic-final PEP 591
#11179 opened Sep 23, 2021 by sobolevn
Inconsistent narrowing of Union and TypeVar with constraints and neglect of @final bug mypy got something wrong topic-final PEP 591 topic-type-narrowing Conditional type narrowing / binder
#10898 opened Jul 31, 2021 by tyralla
[mypyc] support of @final types bug mypy got something wrong topic-final PEP 591 topic-mypyc mypyc bugs
#9612 opened Oct 18, 2020 by sobolevn
1
TypeVar not narrowed when using isinstance or issubclass on final classes bug mypy got something wrong topic-final PEP 591 topic-type-narrowing Conditional type narrowing / binder topic-type-variables
#12163 opened Feb 10, 2022 by DetachHead
2
Narrow x is Sentinel where x is Union[type[Sentinel], ...] and Sentinel is @final feature topic-final PEP 591 topic-type-narrowing Conditional type narrowing / binder
#15553 opened Jun 29, 2023 by jonathanslenders
1
2
Allow omitting initializer for Final attributes in dataclasses feature priority-1-normal topic-dataclasses topic-final PEP 591
#5608 opened Sep 12, 2018 by ilevkivskyi
2
Support for Final-as-default, like Rust feature topic-final PEP 591
#16313 opened Oct 22, 2023 by willhansen
2
[stubtest] Support @final decorator on methods as well feature topic-final PEP 591 topic-stubtest
#14924 opened Mar 19, 2023 by sobolevn
2
Mypy does not correctly narrow indexing operations when using Literal or Final keys priority-2-low topic-final PEP 591 topic-literal-types topic-type-narrowing Conditional type narrowing / binder topic-typed-dict
#7905 opened Nov 8, 2019 by Michael0x2a
3
Allow Final attributes declared in class body if initialized in ctor needs discussion topic-final PEP 591
#8982 opened Jun 9, 2020 by llchan
3
Allow Final in type arguments to avoid shadowing arguments - disallow reassignment of function parameters feature topic-final PEP 591
#11076 opened Sep 8, 2021 by MadLittleMods
3
type not narrowed within function when it's Final bug mypy got something wrong topic-final PEP 591
#12006 opened Jan 18, 2022 by DetachHead
3
Allow Annotated to wrap Final and ClassVar bug mypy got something wrong topic-final PEP 591
#12061 opened Jan 25, 2022 by GBeauregard
3
Error on conditional initialization of Final class variables bug mypy got something wrong topic-final PEP 591
#10736 opened Jun 29, 2021 by nelsyeung
4
Consider allowing @final methods in Protocols feature topic-final PEP 591 topic-protocols
#13310 opened Aug 2, 2022 by tmke8
4
TypedDict 'in' narrowing w/o @final feature topic-final PEP 591 topic-type-narrowing Conditional type narrowing / binder topic-typed-dict
#15697 opened Jul 18, 2023 by ikonst
1
4
final TypedDict with total=False does not allow clear/popitem bug mypy got something wrong topic-final PEP 591 topic-typed-dict
#14914 opened Mar 17, 2023 by alicederyn
5
Overloading an abstract attribute with a Final one bug mypy got something wrong topic-final PEP 591 topic-inheritance Inheritance and incompatible overrides
#14863 opened Mar 9, 2023 by ydirson
6
no error when setting init=False on Final field in dataclass feature good-second-issue priority-2-low topic-dataclasses topic-final PEP 591
#13119 opened Jul 14, 2022 by DetachHead
1
10
final TypedDict feature priority-1-normal topic-final PEP 591 topic-typed-dict
#7981 opened Nov 20, 2019 by crusaderky
14
FR: Type narrowing for x is C documentation feature priority-1-normal topic-final PEP 591 topic-type-narrowing Conditional type narrowing / binder
#7642 opened Oct 5, 2019 by jbwdevries
19
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