np.arange([start], stop, [step]) >>> np.arange(10) # stop array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]) >>> np.arange(2, 10) array([2, 3, 4, 5, 6, 7, 8, 9]) >>> np.arange(2, 10, 2) array([2, 4, 6, 8])