def __rsub__(self, minuend):
"""
This TimeDeltaEx is subtracted from the datetime.date, datetime.datetime,
datetime.time (with possible wrapping at the midnight),
or datetime.timedelta.
Whenever the minuend is the datetime.date,
the result is automatically enhanced from datetime.date to DateEx.
Whenever the minuend is the datetime.datetime,
the result is automatically enhanced from datetime.datetime to DateTimeEx.
Whenever the minuend is the datetime.time,
the result is automatically enhanced from datetime.time to TimeEx.
Whenever the minuend is the datetime.timedelta,
the result is automatically enhanced from datetime.timedelta
to TimeDeltaEx.
>>> TimeEx(3, 4, 15, 92) - TimeDeltaEx(0, 2, 71, 82)
TimeEx(3, 4, 12, 918021)
>>> TimeEx(3, 4, 15, 92) - TimeDeltaEx(2, 71, 82, 81)
TimeEx(3, 3, 3, 919010)
>>> TimeEx(3, 4, 15, 92, tzinfo=DummyTZInfo()) - TimeDeltaEx(2, 71, 82, 81)
TimeEx(3, 3, 3, 919010, tzinfo=<DummyTZInfo>)
>>> time(3, 4, 15, 92) - TimeDeltaEx(0, 2, 71, 82)
TimeEx(3, 4, 12, 918021)
>>> time(3, 4, 15, 92) - TimeDeltaEx(2, 71, 82, 81)
TimeEx(3, 3, 3, 919010)
>>> time(3, 4, 15, 92, tzinfo=DummyTZInfo()) - TimeDeltaEx(2, 71, 82, 81)
TimeEx(3, 3, 3, 919010, tzinfo=<DummyTZInfo>)
>>> timedelta(3, 4, 15, 92) - TimeDeltaEx(2, 71, 82, 81)
TimeDeltaEx(0, 86333, 10933)
>>> timedelta(2, 71, 82, 81) - TimeDeltaEx(3, 4, 15, 92)
TimeDeltaEx(-1, 66, 989067)
@type minuend: date, datetime, time, timedelta
@rtype: date, datetime, time, timedelta
"""
if isinstance(minuend, date):
# TODO
raise NotImplementedError("Not yet implemented!")
elif isinstance(minuend, datetime):
# TODO
raise NotImplementedError("Not yet implemented!")
elif isinstance(minuend, time):
return TimeEx.from_microseconds(t_to_mus(minuend) - self.in_microseconds,
tzinfo=minuend.tzinfo)
elif isinstance(minuend, timedelta):
return TimeDeltaEx.from_microseconds(td_to_mus(minuend) -
self.in_microseconds)
else:
raise NotImplementedError("{0!r} - {1!r}".format(minuend, self))
def __add__(self, summand):
"""
Add this TimeDeltaEx to the datetime.date, datetime.datetime,
datetime.time (with possible wrapping at the midnight),
or to the datetime.timedelta.
Whenever another summand is the datetime.date,
the result is automatically enhanced from datetime.date to DateEx.
Whenever another summand is the datetime.datetime,
the result is automatically enhanced from datetime.datetime to DateTimeEx.
Whenever another summand is the datetime.time,
the result is automatically enhanced from datetime.time to TimeEx.
Whenever another summand is the datetime.timedelta,
the result is automatically enhanced from datetime.timedelta
to TimeDeltaEx.
>>> time(23, 44, 55) + TimeDeltaEx(hours = 3, minutes = 20)
TimeEx(3, 4, 55)
>>> TimeEx(23, 44, 55) + TimeDeltaEx(hours = 3, minutes = 20)
TimeEx(3, 4, 55)
>>> time(23, 44, 55, tzinfo=DummyTZInfo()) + TimeDeltaEx(hours=3, minutes=20)
TimeEx(3, 4, 55, tzinfo=<DummyTZInfo>)
>>> TimeEx(23, 44, 55, tzinfo=DummyTZInfo()) + TimeDeltaEx(hours=3, minutes =20)
TimeEx(3, 4, 55, tzinfo=<DummyTZInfo>)
>>> TimeDeltaEx(hours=3, minutes=20) + time(23, 44, 55)
TimeEx(3, 4, 55)
>>> TimeDeltaEx(hours=3, minutes=20) + TimeEx(23, 44, 55)
TimeEx(3, 4, 55)
>>> TimeDeltaEx(hours=3, minutes=20) + time(23, 44, 55, tzinfo=DummyTZInfo())
TimeEx(3, 4, 55, tzinfo=<DummyTZInfo>)
>>> TimeDeltaEx(hours=3, minutes=20) + TimeEx(23, 44, 55, tzinfo=DummyTZInfo())
TimeEx(3, 4, 55, tzinfo=<DummyTZInfo>)
>>> TimeDeltaEx(3, 14, 15, 92) + timedelta(2, 71, 82, 81)
TimeDeltaEx(5, 85, 173097)
>>> timedelta(2, 71, 82, 81) + TimeDeltaEx(3, 14, 15, 92)
TimeDeltaEx(5, 85, 173097)
@type summand: date, datetime, time, timedelta
@rtype: TimeDeltaEx
"""
assert isinstance(summand, (date, datetime, time, timedelta)), \
repr(summand)
if isinstance(summand, date):
# TODO
raise NotImplementedError("Not yet implemented!")
elif isinstance(summand, datetime):
# TODO
raise NotImplementedError("Not yet implemented!")
elif isinstance(summand, time):
return TimeEx.from_microseconds(self.in_microseconds + t_to_mus(summand),
tzinfo=summand.tzinfo)
elif isinstance(summand, timedelta):
return TimeDeltaEx.from_microseconds(td_to_mus(self) + td_to_mus(summand))
else:
raise NotImplementedError("{0!r} + {1!r}".format(self, summand))