test_timezones.py 文件源码

def test_tzaware_offset(self):
        dates = date_range('2012-11-01', periods=3, tz='US/Pacific')
        offset = dates + offsets.Hour(5)
        self.assertEqual(dates[0] + offsets.Hour(5), offset[0])

        # GH 6818
        for tz in ['UTC', 'US/Pacific', 'Asia/Tokyo']:
            dates = date_range('2010-11-01 00:00', periods=3, tz=tz, freq='H')
            expected = DatetimeIndex(['2010-11-01 05:00', '2010-11-01 06:00',
                                      '2010-11-01 07:00'], freq='H', tz=tz)

            offset = dates + offsets.Hour(5)
            self.assertTrue(offset.equals(expected))
            offset = dates + np.timedelta64(5, 'h')
            self.assertTrue(offset.equals(expected))
            offset = dates + timedelta(hours=5)
            self.assertTrue(offset.equals(expected))