Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #64610 > unrolled thread

datetime as subclass of date

Back to article view | Back to comp.lang.python

Contents

  datetime as subclass of date Skip Montanaro <skip@pobox.com> - 2014-01-23 08:16 -0600

#64610 — datetime as subclass of date

This took my by surprise just now:

>>> import datetime
>>> now = datetime.datetime.now()
>>> isinstance(now, datetime.datetime)
True
>>> isinstance(now, datetime.time)
False
>>> isinstance(now, datetime.date)
True
>>> issubclass(datetime.datetime, datetime.date)
True

I'd never paid any attention to the relationship between the datetime,
time, and date classes of the datetime module before now, but have an
application where, for backwards compatibility, date objects must be
mapped to datetime objects with a time of midnight. That wasn't
working, because I was asking if a datetime instance was an instance
of a date. Which, it turns out, it is.

Skip

[toc] | [standalone]

Back to top | Article view | comp.lang.python

csiph-web