test_categorical.py 文件源码

def test_pickle_v0_14_1(self):

        # we have the name warning
        # 10482
        with tm.assert_produces_warning(UserWarning):
            cat = pd.Categorical(values=['a', 'b', 'c'],
                                 categories=['a', 'b', 'c', 'd'],
                                 name='foobar', ordered=False)
        pickle_path = os.path.join(tm.get_data_path(),
                                   'categorical_0_14_1.pickle')
        # This code was executed once on v0.14.1 to generate the pickle:
        #
        # cat = Categorical(labels=np.arange(3), levels=['a', 'b', 'c', 'd'],
        #                   name='foobar')
        # with open(pickle_path, 'wb') as f: pickle.dump(cat, f)
        #
        self.assert_categorical_equal(cat, pd.read_pickle(pickle_path))