Omit errors for class pattern matches against object#19709
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ilevkivskyi merged 2 commits intopython:masterfrom Aug 26, 2025
Merged
Omit errors for class pattern matches against object#19709ilevkivskyi merged 2 commits intopython:masterfrom
ilevkivskyi merged 2 commits intopython:masterfrom
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
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LG, this is essentially the same as hasattr().
This was referenced Aug 27, 2025
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Since the class pattern matches any subclass, it can also be used to check whether the matched object has a specific attribute. Mypy should not emit an error for it.
Using
objectfor it is recommended in PEP 635 and more prominently in the precursor PEP 622.