Why are timezone aware and naive datetimes not distinct classes?
Adam Tauno Williams
awilliam at whitemice.org
Mon Mar 11 13:27:11 EDT 2013
On Fri, 2013-03-08 at 13:41 -0500, Roy Smith wrote:
> To make a long (and painful) story short, I've got a (large) list of
> datetimes, and was getting some bizarre errors working with it. One of
> the things I tried while debugging the problem was verifying that all
> the elements of the list were indeed datetimes:
> In [59]: set(type(foo) for foo in x)
> Out[59]: set([datetime.datetime]
Because date/time management in Python is *@*&@R&*(R *@&Y terrible!
Period, full-stop, awful, crappy, lousy, and aggravating. The design is
haphazard and error inducing.
Pass through the list once and convert them all the UTC [or I suppose,
make them all naive].
BTW, this page is a life and sanity saver:
<http://taaviburns.ca/what_you_need_to_know_about_datetimes/datetime_transforms.html>
And one of my own tricks is posted here:
<http://www.whitemiceconsulting.com/2012/10/setting-course-for-utc.html>
> Well, it turns out, one of them was a timezone-aware datetime, and all
> the others were naive! I finally figured it out when I tried
Welcome!
--
Adam Tauno Williams GPG D95ED383
Systems Administrator, Python Developer, LPI / NCLA
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