23     def fromutc(self, dt):  argument
24         assert dt.tzinfo is self
25         stamp = (dt - datetime(1970, 1, 1, tzinfo=self)) // SECOND
30         return datetime(*args, microsecond=dt.microsecond,
33     def utcoffset(self, dt):  argument
34         if self._isdst(dt):
39     def dst(self, dt):  argument
40         if self._isdst(dt):
45     def tzname(self, dt):  argument
46         return _time.tzname[self._isdst(dt)]
48     def _isdst(self, dt):  argument
49         tt = (dt.year, dt.month, dt.day,
50               dt.hour, dt.minute, dt.second,
51               dt.weekday(), 0, 0)
61 def first_sunday_on_or_after(dt):  argument
62     days_to_go = 6 - dt.weekday()
64         dt += timedelta(days_to_go)
65     return dt
121     def tzname(self, dt):  argument
122         if self.dst(dt):
127     def utcoffset(self, dt):  argument
128         return self.stdoffset + self.dst(dt)
130     def dst(self, dt):  argument
131         if dt is None or dt.tzinfo is None:
137         assert dt.tzinfo is self
138         start, end = us_dst_range(dt.year)
141         dt = dt.replace(tzinfo=None)
142         if start + HOUR <= dt < end - HOUR:
145         if end - HOUR <= dt < end:
147             return ZERO if dt.fold else HOUR
148         if start <= dt < start + HOUR:
150             return HOUR if dt.fold else ZERO
154     def fromutc(self, dt):  argument
155         assert dt.tzinfo is self
156         start, end = us_dst_range(dt.year)
159         std_time = dt + self.stdoffset