oddities in the datetime module
maxm at mxm.dk
Fri Jan 14 23:03:16 CET 2005
Serge Orlov wrote:
> Max M wrote:
> Yes, you did. datetime.timetuple is those who want *time module* format, you should use datetime.data, datetime.time, datetime.year
> and so on...
> As they say, if the only tool you have is timetuple, everything looks like tuple <wink>
> Try this:
>>>>dt = datetime(2005, 1, 1, 12, 0, 0)
> datetime.date(2005, 1, 1)
This doesn't solve it. I don't think you understand my issue.
First of, it should be possible to easily convert between the datetime
And eg. the date object doesn't have a datetime() method. Which it could
easily have. Neither does time. They could have. But I don't think that
is the way to solve it.
It is a problem if you make a subclass of datetime. Often you will ned
to make datetime arithmetics with the new class.
Like: datetime_subclass_1 + datetime_subclass_2
The result of that is a plain datetime
In that case you will rather want your own subclass returned. But
subclasses of datetime returns datetime objects. Not the subclass.
So to do an add of your own objects you must convert the output to your
own class "manually"
def __add__(self, other):
result = datetime.__add__(self, other)
datetime(), time() etc. methods will not help with this.
hilsen/regards Max M, Denmark
IT's Mad Science
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