pytz_support.py 文件源码

def info(self, t=None):
        if t is None:
            dt = datetime.utcnow().replace(tzinfo=pytz.utc)
        else:
            # can't use utcfromtimestamp past 2038
            dt = EPOCH + timedelta(0, t)

        # need to normalize tzinfo for the datetime to deal with
        # daylight savings time.
        normalized_dt = self.tzinfo.normalize(dt.astimezone(self.tzinfo))
        normalized_tzinfo = normalized_dt.tzinfo

        offset = normalized_tzinfo.utcoffset(normalized_dt)
        secs = offset.days * 24 * 60 * 60 + offset.seconds
        dst = normalized_tzinfo.dst(normalized_dt)
        if dst == timedelta(0):
            is_dst = 0
        else:
            is_dst = 1
        return secs, is_dst, normalized_tzinfo.tzname(normalized_dt)