[Python-Dev] Issue5434: datetime.monthdelta (original) (raw)

BJörn Lindqvist bjourne at gmail.com
Fri Apr 17 22:41:49 CEST 2009

It's not only about what people find intuitive. Why care about them? Most persons aren't programmers. It is about what application developers find useful too. I have often needed to calculate month deltas according to the proposal. I suspect many other programmers have too. Writing a month add function isn't entirely trivial and would be a good candidate for stdlib imho.

2009/4/17, Antoine Pitrou <solipsis at pitrou.net>:

James Y Knight <foom fuhm.net> writes:

It's a human-interface operation, and as such, everyone (ahem) "knows what it means" to say "2 months from now", but the details don't usually have to be thought about too much. I don't think it's true. When you say "2 months from now", some people will think "9 weeks from now" (or "10 weeks from now"), others "60 days from now", and yet other will think of the meaning this proposal gives it. That's why, when scheduling a meeting, you don't say "2 months from now". You give a precise date instead, because you know otherwise people wouldn't show up on the same day. Regards Antoine.

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