The following command raises an error:
>>> np.einsum(3, , 2, , )
ValueError: If 'op_axes' or 'itershape' is not NULL in theiterator constructor, 'oa_ndim' must be greater than zero
although it should return 6 (i.e., 3*2).
@seberg Did you fix this?
It goes away with the nditer fix (and added a test there).
This is now fixed in master by gh-3104.