[PEP 695] Inherit variance if base class has explicit variance #17787
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Previously we only inferred variance based on member types, but if a base class has explicit variance for some type variables, we need to consider it as well.
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| According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
jhance approved these changes Sep 19, 2024
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Previously we only inferred variance based on member types, but if a base class has explicit variance for some type variables, we need to consider it as well.