test_indexing.py 文件源码

def test_reverse_strides_and_subspace_bufferinit(self):
        # This tests that the strides are not reversed for simple and
        # subspace fancy indexing.
        a = np.ones(5)
        b = np.zeros(5, dtype=np.intp)[::-1]
        c = np.arange(5)[::-1]

        a[b] = c
        # If the strides are not reversed, the 0 in the arange comes last.
        assert_equal(a[0], 0)

        # This also tests that the subspace buffer is initialized:
        a = np.ones((5, 2))
        c = np.arange(10).reshape(5, 2)[::-1]
        a[b, :] = c
        assert_equal(a[0], [0, 1])