>>> u = np.arange(1, 16) >>> u array([ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]) >>> np.shape(u) (15,) >>> u.shape = (3, 5) >>> u array([[ 1, 2, 3, 4, 5], [ 6, 7, 8, 9, 10], [11, 12, 13, 14, 15]]) >>> np.shape(u) (3, 5)