More specific type hints for batched(..., strict=True)#15277
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srittau merged 2 commits intopython:mainfrom Jan 14, 2026
Merged
More specific type hints for batched(..., strict=True)#15277srittau merged 2 commits intopython:mainfrom
batched(..., strict=True)#15277srittau merged 2 commits intopython:mainfrom
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
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reveal_type(next(batched([0, 1], n=2, strict=True)))is nowtuple[int, int]rather thantuple[int, ...]. I went up to 5, which seems to match types for similar classes in itertools.I suppose this is technically a breaking change for anyone who currently annotates as
x: batched[int]? (which is nowx: batched[tuple[int, ...]]). Not sure if this is a big deal.