On Mon, Jun 4, 2012 at 1:12 PM, Guido van Rossum <gu...@python.org> wrote: > ... I heard > a colleague complain that he'd lost several hours trying to figure out > how to determine whether two datetimes were within 24h of each other, > getting confused by what was happening when the two were on different > sides of a DST transition (or worse, in the middle of one).
I don't think this is a problem that a general purpose module such as datetime can resolve. Assuming that all instances are timezone aware, either of the following tests may be appropriate for a given application: 1) dt1 - dt2 == timedelta(1) 2) dt1.date() - dt2.date() == timedelta(1) and dt1.time() == dt2.time() If your application deals with physical processes - (1) may be appropriate, but if it deals with human schedules - (2) may be appropriate. The only right solution is to lobby your government to abandon the DST. _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
