test_categorical.py 文件源码

def test_is_equal_dtype(self):

        # test dtype comparisons between cats

        c1 = Categorical(list('aabca'), categories=list('abc'), ordered=False)
        c2 = Categorical(list('aabca'), categories=list('cab'), ordered=False)
        c3 = Categorical(list('aabca'), categories=list('cab'), ordered=True)
        self.assertTrue(c1.is_dtype_equal(c1))
        self.assertTrue(c2.is_dtype_equal(c2))
        self.assertTrue(c3.is_dtype_equal(c3))
        self.assertFalse(c1.is_dtype_equal(c2))
        self.assertFalse(c1.is_dtype_equal(c3))
        self.assertFalse(c1.is_dtype_equal(Index(list('aabca'))))
        self.assertFalse(c1.is_dtype_equal(c1.astype(object)))
        self.assertTrue(c1.is_dtype_equal(CategoricalIndex(c1)))
        self.assertFalse(c1.is_dtype_equal(
            CategoricalIndex(c1, categories=list('cab'))))
        self.assertFalse(c1.is_dtype_equal(CategoricalIndex(c1, ordered=True)))