[Python-Dev] TZ-aware local time

[Nick Coghlan]

On Wed, Jun 6, 2012 at 11:57 AM, Alexander Belopolsky
<alexander.belopolsky at gmail.com> wrote:
> On Tue, Jun 5, 2012 at 7:11 PM, Greg Ewing <greg.ewing at canterbury.ac.nz> wrote:
>> What would be so bad about giving datetime objects
>> a DST flag? Apps that don't care could ignore it and
>> get results no worse than the status quo.
>
> This would neatly solve the round-trip problem, but will open a
> different can of worms: what happens to the dst flag when you add a
> timedelta?  If dst flag is optional, should you be able to compare
> dst-aware and dst-naive instances?

Yeah, I think it's cleaner to lean on tzinfo as much as possible. If
we decide we need to support both "local, treating the overlapping
hour as standard time" and "local, treating the overlapping hour as
DST", then that could be represented as two different timezone objects
and follow the normal rules for reconciling timezones rather than
adding a new flag anywhere.

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia