If it's truly "any" kind of Numpy array typing won't help much there I agree. But often it can be helpful to know the shape of the input and the shape of the

If it's truly "any" kind of Numpy array typing won't help much there I agree. But often it can be helpful to know the shape of the input and the shape of the output. Eg are we working with a 2D,3D or ND array. Before 3.11 it was not simple (possible?) To type this. But https://peps.python.org/pep-0646/ https://peps.python.org/pep-0646/ makes it possible. If somewhat clunky on the definition side.