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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

Check class type parameter variance violations in inheritance bug mypy got something wrong priority-1-normal topic-inheritance Inheritance and incompatible overrides topic-type-variables
#736 by JukkaL was closed Sep 26, 2022
1
4
Base class attribute type does not provide type context in subclass bug mypy got something wrong priority-0-high topic-inheritance Inheritance and incompatible overrides topic-type-context Type context / bidirectional inference topic-usability
#4547 by JukkaL was closed Aug 24, 2022
1
5
OrderedCounter copy method incompatible base class definitions topic-inheritance Inheritance and incompatible overrides
#4891 by iliakur was closed Mar 24, 2022
2
Subclasses of external classes confusing mypy needs discussion question topic-inheritance Inheritance and incompatible overrides
#5445 by alanhdu was closed Aug 28, 2023
4
Overriding definition such as type alias in a subclass causes a crash crash priority-0-high topic-inheritance Inheritance and incompatible overrides topic-type-alias TypeAlias and other type alias issues
#5425 by Michael0x2a was closed Jun 24, 2022
2
4
False positive when overriding an async method topic-inheritance Inheritance and incompatible overrides topic-usability
#5125 by JelleZijlstra was closed Aug 28, 2023
3
Can't declare a property setter on a child class without declaring getter there as well feature priority-1-normal topic-descriptors Properties, class vs. instance attributes topic-inheritance Inheritance and incompatible overrides topic-runtime-semantics mypy doesn't model runtime semantics correctly
#4644 by elvslv was closed Jan 9, 2023
2
Give more detail about original definition when override is incompatible priority-1-normal topic-error-reporting How we report errors topic-inheritance Inheritance and incompatible overrides topic-usability
#6808 by JukkaL was closed Aug 13, 2023
3
Better error location for incompatible override due to argument incompatibility feature good-first-issue priority-1-normal topic-error-reporting How we report errors topic-inheritance Inheritance and incompatible overrides topic-usability
#8298 by JukkaL was closed Feb 16, 2023
2
6
Wrong(?) message "Argument incompatible with supertype" when method receive a instance of the same parametrized class bug mypy got something wrong topic-inheritance Inheritance and incompatible overrides
#8877 by mfcabrera was closed Aug 12, 2023
2
Does replacing a type variable make a subclass incompatible? bug mypy got something wrong topic-inheritance Inheritance and incompatible overrides topic-type-variables
#11605 by A5rocks was closed May 1, 2022
1
3
Internal Error found on v0.800 when using Generic Inheritance for dataclass crash topic-dataclasses topic-inheritance Inheritance and incompatible overrides
#10014 by binishkaspar was closed May 15, 2022
1
Incorrect mypy behaviour when inheriting a generic with List[T] field bug mypy got something wrong topic-dataclasses topic-inheritance Inheritance and incompatible overrides
#10986 by Fatal1ty was closed Nov 16, 2022
1
Types of inheritanced class attributes aren't detected bug mypy got something wrong topic-inference When to infer types or require explicit annotations topic-inheritance Inheritance and incompatible overrides
#10375 by abhiabhi94 was closed Aug 12, 2023
1
4
Overriding an overloaded method that returns a value of a Union type bug mypy got something wrong topic-inheritance Inheritance and incompatible overrides topic-overloads
#10799 by yoshum was closed Aug 12, 2023
4
Incompatible type; expected "Optional[T]" with generic dataclasses inheritance bug mypy got something wrong topic-dataclasses topic-inheritance Inheritance and incompatible overrides
#12167 by MarcoRuzzon was closed Mar 26, 2022
1
Missing Liskov error for subclass with subclass field bug mypy got something wrong topic-inheritance Inheritance and incompatible overrides
#11720 by NoamNol was closed Aug 13, 2023
3
Overloads in super-class for sub-class specific return types feature topic-inheritance Inheritance and incompatible overrides topic-overloads
#11759 by twoertwein was closed Mar 31, 2022
2
Error when inheriting from a generic dataclass with a generic attribute bug mypy got something wrong topic-dataclasses topic-inheritance Inheritance and incompatible overrides
#12063 by drewm1980 was closed Mar 26, 2022
3
Type annotation for instance variable in Protocol is forgotten when assigning empty container in subclass bug mypy got something wrong topic-inheritance Inheritance and incompatible overrides topic-protocols
#13789 by tmke8 was closed Oct 2, 2022
1
Incorrect incompatible override report with self type + overload bug mypy got something wrong topic-inheritance Inheritance and incompatible overrides topic-overloads
#14002 by JelleZijlstra was closed Nov 10, 2022
1
False positive: signature incompatible with supertype bug mypy got something wrong topic-inheritance Inheritance and incompatible overrides topic-overloads
#13106 by agronholm was closed Jul 14, 2022
18
Non-applicable overloads should not be requested in subclasses feature priority-2-low topic-inheritance Inheritance and incompatible overrides topic-overloads
#13591 by vnmabus was closed Aug 13, 2023
2
Changing arguments to position only on an override should be incompatible bug mypy got something wrong topic-inheritance Inheritance and incompatible overrides
#13115 by hackaugusto was closed Jul 13, 2022
1
Incorrect type inference in Derived class that was explicitly typed in Base bug mypy got something wrong topic-inheritance Inheritance and incompatible overrides
#12268 by Riolku was closed Aug 13, 2023
1
7
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