gateways.py 文件源码

def _get_timezone_distance(self, offset):
        '''
        Return the distance between the local timezone and
        the one with offset 'offset'.

        :param offset: the distance of a timezone to GMT.
        :type offset: int
        :returns: distance between local offset and param offset.
        :rtype: int
        '''
        timezones = range(-11, 13)
        tz1 = offset
        tz2 = self._local_offset
        distance = abs(timezones.index(tz1) - timezones.index(tz2))
        if distance > 12:
            if tz1 < 0:
                distance = timezones.index(tz1) + timezones[::-1].index(tz2)
            else:
                distance = timezones[::-1].index(tz1) + timezones.index(tz2)

        return distance