Hellow, while using the nested_iters function, I've noticed that it does not accept length zero nestings. For example, the following fails: nested_iters([ones(3),ones(3)], [[], [0]]) with "ValueError: If 'op_axes' or 'itershape' is not NULL in theiterator constructor, 'oa_ndim' must be greater than zero" This makes a certain amount of sense to me, but I think having the iterator with the empty axes have a single iteration would be more useful. For example, if you are using nested_iters to ally a function along a specific set of axes, you'll otherwise have to special case the case where those axes take up the whole array (which is my use case). This is not much of a hassle for me, but I thought other people might like to know. Also, I could not find any nested_iters documentation.