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author | Georg Brandl <georg@python.org> | 2007-08-15 14:27:07 (GMT) |
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committer | Georg Brandl <georg@python.org> | 2007-08-15 14:27:07 (GMT) |
commit | 739c01d47b9118d04e5722333f0e6b4d0c8bdd9e (patch) | |
tree | f82b450d291927fc1758b96d981aa0610947b529 /Doc/lib/tzinfo-examples.py | |
parent | 2d1649094402ef393ea2b128ba2c08c3937e6b93 (diff) | |
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Delete the LaTeX doc tree.
Diffstat (limited to 'Doc/lib/tzinfo-examples.py')
-rw-r--r-- | Doc/lib/tzinfo-examples.py | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/Doc/lib/tzinfo-examples.py b/Doc/lib/tzinfo-examples.py deleted file mode 100644 index 5a2b8ad..0000000 --- a/Doc/lib/tzinfo-examples.py +++ /dev/null @@ -1,139 +0,0 @@ -from datetime import tzinfo, timedelta, datetime - -ZERO = timedelta(0) -HOUR = timedelta(hours=1) - -# A UTC class. - -class UTC(tzinfo): - """UTC""" - - def utcoffset(self, dt): - return ZERO - - def tzname(self, dt): - return "UTC" - - def dst(self, dt): - return ZERO - -utc = UTC() - -# A class building tzinfo objects for fixed-offset time zones. -# Note that FixedOffset(0, "UTC") is a different way to build a -# UTC tzinfo object. - -class FixedOffset(tzinfo): - """Fixed offset in minutes east from UTC.""" - - def __init__(self, offset, name): - self.__offset = timedelta(minutes = offset) - self.__name = name - - def utcoffset(self, dt): - return self.__offset - - def tzname(self, dt): - return self.__name - - def dst(self, dt): - return ZERO - -# A class capturing the platform's idea of local time. - -import time as _time - -STDOFFSET = timedelta(seconds = -_time.timezone) -if _time.daylight: - DSTOFFSET = timedelta(seconds = -_time.altzone) -else: - DSTOFFSET = STDOFFSET - -DSTDIFF = DSTOFFSET - STDOFFSET - -class LocalTimezone(tzinfo): - - def utcoffset(self, dt): - if self._isdst(dt): - return DSTOFFSET - else: - return STDOFFSET - - def dst(self, dt): - if self._isdst(dt): - return DSTDIFF - else: - return ZERO - - def tzname(self, dt): - return _time.tzname[self._isdst(dt)] - - def _isdst(self, dt): - tt = (dt.year, dt.month, dt.day, - dt.hour, dt.minute, dt.second, - dt.weekday(), 0, -1) - stamp = _time.mktime(tt) - tt = _time.localtime(stamp) - return tt.tm_isdst > 0 - -Local = LocalTimezone() - - -# A complete implementation of current DST rules for major US time zones. - -def first_sunday_on_or_after(dt): - days_to_go = 6 - dt.weekday() - if days_to_go: - dt += timedelta(days_to_go) - return dt - -# In the US, DST starts at 2am (standard time) on the first Sunday in April. -DSTSTART = datetime(1, 4, 1, 2) -# and ends at 2am (DST time; 1am standard time) on the last Sunday of Oct. -# which is the first Sunday on or after Oct 25. -DSTEND = datetime(1, 10, 25, 1) - -class USTimeZone(tzinfo): - - def __init__(self, hours, reprname, stdname, dstname): - self.stdoffset = timedelta(hours=hours) - self.reprname = reprname - self.stdname = stdname - self.dstname = dstname - - def __repr__(self): - return self.reprname - - def tzname(self, dt): - if self.dst(dt): - return self.dstname - else: - return self.stdname - - def utcoffset(self, dt): - return self.stdoffset + self.dst(dt) - - def dst(self, dt): - if dt is None or dt.tzinfo is None: - # An exception may be sensible here, in one or both cases. - # It depends on how you want to treat them. The default - # fromutc() implementation (called by the default astimezone() - # implementation) passes a datetime with dt.tzinfo is self. - return ZERO - assert dt.tzinfo is self - - # Find first Sunday in April & the last in October. - start = first_sunday_on_or_after(DSTSTART.replace(year=dt.year)) - end = first_sunday_on_or_after(DSTEND.replace(year=dt.year)) - - # Can't compare naive to aware objects, so strip the timezone from - # dt first. - if start <= dt.replace(tzinfo=None) < end: - return HOUR - else: - return ZERO - -Eastern = USTimeZone(-5, "Eastern", "EST", "EDT") -Central = USTimeZone(-6, "Central", "CST", "CDT") -Mountain = USTimeZone(-7, "Mountain", "MST", "MDT") -Pacific = USTimeZone(-8, "Pacific", "PST", "PDT") |