test_defchararray.py 文件源码

def test_slice(self):
        """Regression test for https://github.com/numpy/numpy/issues/5982"""

        arr = np.array([['abc ', 'def '], ['geh ', 'ijk ']],
                       dtype='S4').view(np.chararray)
        sl1 = arr[:]
        assert_array_equal(sl1, arr)
        assert_(sl1.base is arr)
        assert_(sl1.base.base is arr.base)

        sl2 = arr[:, :]
        assert_array_equal(sl2, arr)
        assert_(sl2.base is arr)
        assert_(sl2.base.base is arr.base)

        assert_(arr[0, 0] == asbytes('abc'))