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Title: Fix negative narrowing of tuples in match statement by brianschubert · Pull Request #17817 · python/mypy · GitHub

Open Graph Title: Fix negative narrowing of tuples in match statement by brianschubert · Pull Request #17817 · python/mypy

X Title: Fix negative narrowing of tuples in match statement by brianschubert · Pull Request #17817 · python/mypy

Description: Optional static typing for Python. Contribute to python/mypy development by creating an account on GitHub.

Open Graph Description: Fixes #17328 Before Lines marked with !!! denote incorrect behavior. (Playground link) from typing import Literal m4: tuple[Literal[1], int] match m4: case (1, 5): reveal_type(m4) # N...

X Description: Fixes #17328 Before Lines marked with !!! denote incorrect behavior. (Playground link) from typing import Literal m4: tuple[Literal[1], int] match m4: case (1, 5): reveal_type(m4) # N...

Opengraph URL: https://github.com/python/mypy/pull/17817

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Fix negative narrowing of tuples in match statementhttps://github.com/python/mypy/pull/17817/commits/74bf2cc524a77115e6bf002a29065740a70e5c95
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type narrowing vs assert vs unreachability changed in PR #17818 (between mypy 1.11 and 1.12) #18431 https://github.com/python/mypy/issues/18431
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