Micro-optimization: Avoid temporary set creation in is_proper_subtype by JukkaL · Pull Request #19463 · python/mypy
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This was suggested by @sterliakov in #19384 (comment)
This is a part of a set of micro-optimizations that improve self check performance by ~5.5%.
This is a part of a set of micro-optimizations that improve self check performance by ~5.5%.
JukkaL
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ilevkivskyi and
sterliakov
JukkaL
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Micro-optimization: Avoid temporary set creation is_proper_subtype
Micro-optimization: Avoid temporary set creation in is_proper_subtype
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github-actions
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Jul 16, 2025
github-actions bot commented
Jul 16, 2025According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅
sterliakov approved these changes Jul 16, 2025
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