In Python, the order of an array is given by numpy.shape(), which returns a tuple with two elements, in the case of a 2-dimensional array. Thus the condition for the existence of the sum or difference ...

(The expected output of np.sum(np.isnan(scipy.linalg.svd(matrix, full_matrices=False)[0])) is 0; the bug is that the first call to scipy.linalg.svd returns a U matrix with a column of nans (all in the ...