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Title: Fix nondeterministic type checking by making join with explicit Protocol and type promotion commute by hauntsaninja · Pull Request #18402 · python/mypy · GitHub

Open Graph Title: Fix nondeterministic type checking by making join with explicit Protocol and type promotion commute by hauntsaninja · Pull Request #18402 · python/mypy

X Title: Fix nondeterministic type checking by making join with explicit Protocol and type promotion commute by hauntsaninja · Pull Request #18402 · python/mypy

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

Open Graph Description: Fixes #16979 (bzoracler case only, OP case fixed by #19147) See #16979 (comment)

X Description: Fixes #16979 (bzoracler case only, OP case fixed by #19147) See #16979 (comment)

Opengraph URL: https://github.com/python/mypy/pull/18402

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Fix nondeterministic type checking by making join with explicit Protocol and type promotion commutehttps://github.com/python/mypy/pull/18402#top
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Fix nondeterministic type checking involving noncommutative joinhttps://github.com/python/mypy/pull/18402/commits/77679f8cd31d79a08244ece52b72133460aec247
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fix false positivehttps://github.com/python/mypy/pull/18402/commits/69c1a654ef8179b13b6536f22577b94d029e6de5
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Fix nondeterministic type checking caused by nonassociativity of joins #19147 https://github.com/python/mypy/pull/19147
MyPy is nondeterministic across runs #16979 https://github.com/python/mypy/issues/16979
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Fix nondeterministic type checking caused by nonassociativity of joins (https://github.com/python/mypy/commit/f328ad6ab81fba3c8470e98f8e6795813a89f810
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