On Thu, Apr 16, 2009 at 11:54, Amaury Forgeot d'Arc <amaur...@gmail.com> wrote: > In my opinion: > arithmetic with months is a mess. There is no such "month interval" or > "year interval" with a precise definition. > If we adopt some kind of month manipulation, it should be a function > or a method, like you would do for features like last_day_of_month(d), > or following_weekday(d, 'monday'). > > date(2008, 1, 30).add_months(1) == date(2008, 2, 29)
I concur. Trying to shoehorn month arithmetic into timedelta is a PITA, precisely because it's somewhat inexact. It's better to have some separate behavior that has well-defined behavior in edge cases. Cheers, Dirkjan _______________________________________________ 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
