On 2009-04-16 13:42, Paul Moore wrote: > 2009/4/16 Ned Deily<nad at acm.org>: >> In article >> <b8ad139e0904152318p5473cbe5yb5f55a19894cc834 at mail.gmail.com>, >> Jess Austin<jess.austin at gmail.com> wrote: >>> I'm new to python core development, and I've been advised to write to >>> python-dev concerning a feature/patch I've placed at >>> http://bugs.python.org/issue5434, with Rietveld at >>> http://codereview.appspot.com/25079. >> Without having looked at the code, I wonder whether you've looked at >> python-dateutil. I believe its relativedelta type does what you >> propose, plus much more, and it has the advantage of being widely used >> and tested. > > The key thing missing (I believe) from dateutil is any equivalent of monthmod. > > Hmm, it might be possible via relativedelta(d1,d2), but it's not clear > to me from the documentation precisely what attributes/methods of a > relativedelta object are valid for getting data *out* of it. I thought the examples were quite clear. relativedelta() has an alternate constructor precisely suited to these calculations but is general and handles more than just months. >>> from dateutil.relativedelta import * >>> dt = relativedelta(months=1) >>> dt relativedelta(months=+1) >>> from datetime import datetime >>> datetime(2009, 1, 15) + dt datetime.datetime(2009, 2, 15, 0, 0) >>> datetime(2009, 1, 31) + dt datetime.datetime(2009, 2, 28, 0, 0) >>> dt.months 1 >>> datetime(2009, 1, 31) + relativedelta(years=-1) datetime.datetime(2008, 1, 31, 0, 0) -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4