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Better match narrowing for irrefutable sequence patterns - #20782
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The changes around narrow_sequence_child: - implement my suggestion from here: python#18091 (review) - remove an is_subtype check I don't understand
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
hauntsaninja
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Feb 18, 2026
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Will merge this one tomorrow |
JukkaL
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Feb 19, 2026
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This was referenced Feb 25, 2026
hauntsaninja added a commit
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Mar 4, 2026
Fixes#18950 Fixes this comment #19081 (comment) (previously improved on by #20744 and #20782 )
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The changes around narrow_sequence_child:
Fixes#13955
Helps with things in #19081