[Python-Dev] Status on PEP-431 Timezones

[Lennart Regebro]

On Thu, Apr 9, 2015 at 1:31 AM, Alexander Belopolsky
<alexander.belopolsky at gmail.com> wrote:
> Storing isdst in the datetime object would allow utcoffset(dt) to
> distinguish between 1:30AM before clock change and 1:30AM after.  Where do
> you propose to store the offset?  If you store it in dt, why would you need
> the tzinfo?

Because otherwise you don't know what tzinfo the datetime uses, and
you need to know that if you add or subtract a timedelta, or compare
with another datetime.

> Regardless, whatever the proposal to add timezones to stdlib will end up
> being, it must include the ability to implement an equivalent of UNIX date
> command shown above.

That's a strftime() issue, I think that issue is already solved.