TYP: broadcast_shapes shape-typing - #32638
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charris merged 1 commit intoSep 15, 2026
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Diff from mypy_primer, showing the effect of this PR on type check results on a corpus of open source code: jax (https://github.com/google/jax)
- jax/_src/state/indexing.py:254: error: Argument 2 to "broadcast_to" has incompatible type "tuple[int | Array, ...] | tuple[Any, ...]"; expected "tuple[int, ...]" [arg-type]
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Thanks Joren. |
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np.broadcast_shapesused to always returntuple[Any, ...](the unknown / "gradual" shape-type). This overloads it for the 0, 1, and 2 argument cases and input dimensions of up to 3d.Pair programmed with AI.