datetimetester.py 文件源码

def test_strptime(self):
        string = '2004-12-01 13:02:47.197'
        format = '%Y-%m-%d %H:%M:%S.%f'
        expected = _strptime._strptime_datetime(self.theclass, string, format)
        got = self.theclass.strptime(string, format)
        self.assertEqual(expected, got)
        self.assertIs(type(expected), self.theclass)
        self.assertIs(type(got), self.theclass)

        strptime = self.theclass.strptime
        self.assertEqual(strptime("+0002", "%z").utcoffset(), 2 * MINUTE)
        self.assertEqual(strptime("-0002", "%z").utcoffset(), -2 * MINUTE)
        # Only local timezone and UTC are supported
        for tzseconds, tzname in ((0, 'UTC'), (0, 'GMT'),
                                 (-_time.timezone, _time.tzname[0])):
            if tzseconds < 0:
                sign = '-'
                seconds = -tzseconds
            else:
                sign ='+'
                seconds = tzseconds
            hours, minutes = divmod(seconds//60, 60)
            dtstr = "{}{:02d}{:02d} {}".format(sign, hours, minutes, tzname)
            dt = strptime(dtstr, "%z %Z")
            self.assertEqual(dt.utcoffset(), timedelta(seconds=tzseconds))
            self.assertEqual(dt.tzname(), tzname)
        # Can produce inconsistent datetime
        dtstr, fmt = "+1234 UTC", "%z %Z"
        dt = strptime(dtstr, fmt)
        self.assertEqual(dt.utcoffset(), 12 * HOUR + 34 * MINUTE)
        self.assertEqual(dt.tzname(), 'UTC')
        # yet will roundtrip
        self.assertEqual(dt.strftime(fmt), dtstr)

        # Produce naive datetime if no %z is provided
        self.assertEqual(strptime("UTC", "%Z").tzinfo, None)

        with self.assertRaises(ValueError): strptime("-2400", "%z")
        with self.assertRaises(ValueError): strptime("-000", "%z")