Comment 4 for bug 389544

The right way to do it seems to be plataform specific.

bin/service/web_services.py:timezone_get should return the contents of
'/etc/timezone'

Win32 seems to have a

import win32timezone
win32timezone.GetLocalTimeZone()

that returns a tzinfo object which we could extract timezone.

Olivier Dony (OpenERP) escreveu:
> Determining the local timezone accurately is apparently non trivial in Python, taking into account the duplicate DST abbreviations ('EST' exists in 3 different locations with 3 different offsets from UTC) , the random timezone names used in Windows systems, etc.
> However this issue is serious and causes a lot of bugs in the client when time offsets need to be calculated (the problem is actually very frequent on Windows systems, for example on Vista/Seven the tzname (DST) returned for CET is 'Madrid, Brussels')
>
> A few links:
> * http://regebro.wordpress.com/2007/12/18/python-and-time-zones-fighting-the-beast/
> * https://bugs.launchpad.net/zope2/+bug/142148
> * http://code.google.com/p/python-datetime-tz/source/browse/trunk/datetime_tz.py?spec=svn5&r=5#102
>
>