Improve sentinel narrowing - #21844
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
JelleZijlstra
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Aug 13, 2026
JelleZijlstra
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fixtures are the bane of our existence. Thanks for improving this!
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Followup to #21647
Adjust test case for equality narrowing. That's already implemented, the test was just using a striped down fixture.
Also add support for narrowing sentinels with
inand collections similar to enums.