test_multiarray.py 文件源码

def test_datetime(self):
        a = np.array([0,0,0], dtype='datetime64[D]')
        b = np.array([2,1,0], dtype='datetime64[D]')
        idx = np.lexsort((b, a))
        expected_idx = np.array([2, 1, 0])
        assert_array_equal(idx, expected_idx)

        a = np.array([0,0,0], dtype='timedelta64[D]')
        b = np.array([2,1,0], dtype='timedelta64[D]')
        idx = np.lexsort((b, a))
        expected_idx = np.array([2, 1, 0])
        assert_array_equal(idx, expected_idx)