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Title: Fix loop convergence with redefinitions by ilevkivskyi · Pull Request #20865 · python/mypy · GitHub

Open Graph Title: Fix loop convergence with redefinitions by ilevkivskyi · Pull Request #20865 · python/mypy

X Title: Fix loop convergence with redefinitions by ilevkivskyi · Pull Request #20865 · python/mypy

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

Open Graph Description: Currently, we reset the variable type each time we visit the initial definition (textually first assignment). This can cause problems with --allow-redefinition-new: Not all branches will be explor...

X Description: Currently, we reset the variable type each time we visit the initial definition (textually first assignment). This can cause problems with --allow-redefinition-new: Not all branches will be explor...

Opengraph URL: https://github.com/python/mypy/pull/20865

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Fix loop convergence with redefinitionshttps://github.com/python/mypy/pull/20865#top
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Fix loop convergence with redefinitionshttps://github.com/python/mypy/pull/20865/commits/74006ebb85c06b922b8aa27001d9d45582ce26b7
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Unify empty context fallback in assignments #20851 https://github.com/python/mypy/pull/20851
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February 23, 2026 12:45https://github.com/python/mypy/pull/20865#commits-pushed-64896eb
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Merge remote-tracking branch 'upstream/master' into fix-redefine-conv…https://github.com/python/mypy/pull/20865/commits/64896ebf894b6f8b265235db803ab475ba0b88bd
64896ebhttps://github.com/python/mypy/pull/20865/commits/64896ebf894b6f8b265235db803ab475ba0b88bd
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Try preserving existng behaviour around Any vs empty listhttps://github.com/python/mypy/pull/20865/commits/439304771971c648c5a43d91ea76fd858674a35b
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Merge remote-tracking branch 'upstream/master' into fix-redefine-conv…https://github.com/python/mypy/pull/20865/commits/0359440567be9af0e61710f2faa710a5f982a475
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Fix regression on redefinition in deferred loop #20879 https://github.com/python/mypy/pull/20879
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Feb 24, 2026 https://github.com/python/mypy/pull/20865#ref-commit-1e0ee99
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Fix regression on redefinition in deferred loop (https://github.com/python/mypy/commit/1e0ee99ced387cd7ef3f8e18cbb886b73f68d84f
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