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variance not respected for annotated `self` method #1101

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KotlinIsland opened this issue Feb 24, 2025 · 0 comments

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type checking / linting upstream bug

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KotlinIsland commented Feb 24, 2025 •

edited

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Code sample in basedpyright playground

from __future__ import annotations

class A[T]:
    def __init__(self, t: T):
        self._t: T

    def get(self) -> T:
        return self._t

    def set(self: A[object], new_value: int):
        self._t = new_value  # expected error

a = A("hi")
a.set(3)

KotlinIsland added the type checking / linting label

DetachHead added the upstream bug label

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