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Title: gh-143831: Compare cells by identity in forward references by johnslavik · Pull Request #143848 · python/cpython · GitHub

Open Graph Title: gh-143831: Compare cells by identity in forward references by johnslavik · Pull Request #143848 · python/cpython

X Title: gh-143831: Compare cells by identity in forward references by johnslavik · Pull Request #143848 · python/cpython

Description: Cells are mutable and, in regular comparison, they are equal when their contents are equal (or if both are empty). Two different cells should not be considered equal by value in forward references,...

Open Graph Description: Cells are mutable and, in regular comparison, they are equal when their contents are equal (or if both are empty). Two different cells should not be considered equal by value in forward references,...

X Description: Cells are mutable and, in regular comparison, they are equal when their contents are equal (or if both are empty). Two different cells should not be considered equal by value in forward references,...

Opengraph URL: https://github.com/python/cpython/pull/143848

X: @github

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Python 3.14.1+ annotationlib regression: ForwardRef.__hash__ raises TypeError: unhashable type: 'cell' #143831https://github.com/python/cpython/issues/143831
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Hash and compare cells by identityhttps://github.com/python/cpython/pull/143848/commits/55e07ae86be204569f1a6ffbce095b5a15f1e788
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Python 3.14.1+ annotationlib regression: ForwardRef.__hash__ raises TypeError: unhashable type: 'cell' #143831 https://github.com/python/cpython/issues/143831
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Jan 15, 2026 https://github.com/python/cpython/pull/143848#pullrequestreview-3664037692
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[Bug] CPython 3.14.2 + PEP 649 annotationlib.ForwardRef + PEP 484 self-reference = TypeError: unhashable type: 'cell' 😨 beartype/beartype#610 https://github.com/beartype/beartype/issues/610
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Merge branch 'main' into fix-forwardrefs-dont-hash-cellshttps://github.com/python/cpython/pull/143848/commits/9194bbf34429799f573c7c5b64de08fc2e1ede29
9194bbfhttps://github.com/python/cpython/pull/143848/commits/9194bbf34429799f573c7c5b64de08fc2e1ede29
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Use appropriate semantics in __eq__https://github.com/python/cpython/pull/143848/commits/ff81d6a838d17e3a33100069dd48bfba5ceb2cf6
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Add base testhttps://github.com/python/cpython/pull/143848/commits/6c36442fbd9e49e2f9b717d5ce4e069e5df5e43b
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Test two pathshttps://github.com/python/cpython/pull/143848/commits/d8f5bc8a6816c3ea6c2a8f9df2d7acddbc738f23
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Simplify first self-testhttps://github.com/python/cpython/pull/143848/commits/348127fe4b92583e84eb39d78d565b5d0beee630
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Fix first self-test (typo)https://github.com/python/cpython/pull/143848/commits/bc86ed28159817f0e93759acd2eb80a93ab39798
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Fix second self-test (typo)https://github.com/python/cpython/pull/143848/commits/d434a40a8502b170140f856c40c3f4b8698d2778
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Add news entryhttps://github.com/python/cpython/pull/143848/commits/1f36f76765511f7dab3d5ca88c7c0a2238f92b76
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Move self-tests to class levelhttps://github.com/python/cpython/pull/143848/commits/866aef183f1511bf6b0cca25a239bcdd271624e7
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Fix typo in a test forwardrefhttps://github.com/python/cpython/pull/143848/commits/094f0f8e6b45bb1d7647199870cacef2e210a8b4
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