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

Aahz aahz at pythoncraft.com
Mon Mar 15 19:28:05 EST 2004


On Tue, Mar 16, 2004, Greg Ewing wrote:

Gustavo Niemeyer <niemeyer at conectiva.com>:

(just as examples) d + relativedelta(day=1) d + relativedelta(day=31) Sorry, but the more I see of this usage the worse it looks. Here you're effectively using '+' as an assignment operator. To me, that's a gross abuse of the Python language.

Part of the problem is that relativedelta does need to be a single complex object. Consider

today() + relativedelta(month=1, dayofweek=FRIDAY)

contrasted with

today() + relativedelta(weeks=4, dayofweek=FRIDAY)

Humans use complex relative date constructs, and many of them depend on whatever the base time is; in order to do the adjustment correctly, you need to provide a single change construct.

Aahz (aahz at pythoncraft.com) <*> http://www.pythoncraft.com/

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