53 lines
1.4 KiB
Python
53 lines
1.4 KiB
Python
"Implementation of tzinfo classes for use with datetime.datetime."
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import time
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from datetime import timedelta, tzinfo
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class FixedOffset(tzinfo):
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"Fixed offset in minutes east from UTC."
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def __init__(self, offset):
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self.__offset = timedelta(minutes=offset)
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self.__name = "%+03d%02d" % (offset // 60, offset % 60)
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def __repr__(self):
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return self.__name
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def utcoffset(self, dt):
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return self.__offset
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def tzname(self, dt):
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return self.__name
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def dst(self, dt):
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return timedelta(0)
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class LocalTimezone(tzinfo):
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"Proxy timezone information from time module."
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def __init__(self, dt):
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tzinfo.__init__(self, dt)
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self._tzname = time.tzname[self._isdst(dt)]
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def __repr__(self):
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return self._tzname
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def utcoffset(self, dt):
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if self._isdst(dt):
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return timedelta(seconds=-time.altzone)
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else:
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return timedelta(seconds=-time.timezone)
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def dst(self, dt):
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if self._isdst(dt):
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return timedelta(seconds=-time.altzone) - timedelta(seconds=-time.timezone)
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else:
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return timedelta(0)
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def tzname(self, dt):
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return time.tzname[self._isdst(dt)]
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def _isdst(self, dt):
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tt = (dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.weekday(), 0, -1)
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stamp = time.mktime(tt)
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tt = time.localtime(stamp)
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return tt.tm_isdst > 0
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