TYP: Fix DTypeLike runtime type-checker support#31425
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charris merged 1 commit intoMay 13, 2026
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09 - Backport-Candidate
charris
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Test failure seems unrelated |
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Thanks Joren. |
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I note the file in 2.4.x is very different. Would it make sense to just backport the whole current version? |
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Hmm yea, maybe it's easier if I backport it myself then |
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TYP: Fix `DTypeLike` runtime type-checker support (#31425)
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Runtime type-checkers like beartype currently aren't able to check if something is an instance of
numpy.typing.DTypeLikebecause not all protocols in the union type aren't runtime checkable (see https://github.com/mikedh/trimesh/actions/runs/25796361932/job/75774562690?pr=2541 for example). The fix is to to add a@runtime_checkableto the_HasNumPyDTypeprotocol.On the 2.4 branch the
_HasDTypeprotocol is also missing a@runtime_checkable(numpy/numpy/_typing/_dtype_like.py
Lines 44 to 51 in be93fe2
runtime_checkablefromtyping.No AI