[Python-Dev] dateutil (original) (raw)

Gustavo Niemeyer niemeyer at conectiva.com
Mon Mar 15 10:34:54 EST 2004

>> > d.forwardmonths(3).endofmonth() >> >> In dateutil, I think it's d + relativedelta(months=+1, day=1, days=-1). >> Arguably, this is fairly trivial (highly non-obvious, but trivial...) > > Yes, it'd work, but "d + relativedelta(day=31)" would be enough.

Hmm, I feel vaguely uncomfortable actually relying on the "round down out of range values" behaviour. Presumably day=1000 would also work, and would look even stranger to me :-)

This was a design decision, and I confess I'm pretty satisfied by the results of this decision. This simple decision created consistent and expectable results for operations which are not obvious. Also, without this feature, I see almost no reason for using this class instead of timedelta.

-- Gustavo Niemeyer http://niemeyer.net

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