Andrew wrote: > I meant ISO 8601 syntax for "durations" [1].
That's exactly what I was referring to. Consider this session: >>> now = datetime.datetime.now() >>> now datetime.datetime(2014, 3, 28, 12, 4, 38, 517110) >>> then = now - datetime.timedelta(days=57, hours=12, minutes=12, seconds=12) >>> now datetime.datetime(2014, 3, 28, 12, 4, 38, 517110) >>> then datetime.datetime(2014, 1, 29, 23, 52, 26, 517110) so, the difference is: >>> now - then datetime.timedelta(57, 43932) Given that the timedelta has more than "a month's" worth of days, how would you describe it using the ISO8601 duration notation without referencing a specific point in time? Conversely, given your example, "P3Y6M4DT12H30M5S", how would you convert that into a timedelta without knowing which exact years and months this duration refers to? Timedelta objects are very precise beasts, which is almost certainly why they don't support "years" and "months" args in their constructors. This is why I said this deserved a separate topic. Probably on python-ideas. Skip _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
