test_misc_api.py 文件源码

def test_transpose(self):
        frame = self.frame
        dft = frame.T
        for idx, series in compat.iteritems(dft):
            for col, value in compat.iteritems(series):
                if np.isnan(value):
                    self.assertTrue(np.isnan(frame[col][idx]))
                else:
                    self.assertEqual(value, frame[col][idx])

        # mixed type
        index, data = tm.getMixedTypeDict()
        mixed = DataFrame(data, index=index)

        mixed_T = mixed.T
        for col, s in compat.iteritems(mixed_T):
            self.assertEqual(s.dtype, np.object_)