After this, I'll stop prefacing all my questions with apologies for
being a beginner.

import matplotlib.dateutil works fine within sage
but dateutil seems to be empty.  dir(dateutil) doesn't contain
anything -- and I am looking specificalliy for relativedelta. What am
I doing wrong?


On Feb 11, 3:47 pm, mabshoff <mabsh...@googlemail.com> wrote:
> On Feb 11, 3:40 pm, Phaedon Sinis <phaedonsi...@gmail.com> wrote:
>
> > Hi Glenn,
>
> > thanks for looking into this.
> > At first glance, it looks like it basically allows date arithmetic.
> > I was planning to incorporate Gustavo Niemeyer's relativedelta.py for this
> > purpose.
> > My date library adds business-day / holiday calculations.
>
> > Does anyone have a strong preference between relativedelta.py and
> > mxDateTime?
>
> Well, I knew matplotlib had some date/time stuff since I had seen it
> whiz by when unpacking the tarball, so I 20 seconds of grepping
> revealed:
>
> mabsh...@sage:/scratch/mabshoff/sage-3.3.rc1/spkg/standard/
> matplotlib-0.98.3.p5/src$ grep -r "Gustavo Niemeyer" *
> lib/dateutil/rrule.py:Copyright (c) 2003-2005  Gustavo Niemeyer
> <gust...@niemeyer.net>
> lib/dateutil/rrule.py:__author__ = "Gustavo Niemeyer
> <gust...@niemeyer.net>"
> lib/dateutil/tzwin.py:__author__ = "Jeffrey Harris & Gustavo Niemeyer
> <gust...@niemeyer.net>"
> lib/dateutil/tz.py:Copyright (c) 2003-2005  Gustavo Niemeyer
> <gust...@niemeyer.net>
> lib/dateutil/tz.py:__author__ = "Gustavo Niemeyer
> <gust...@niemeyer.net>"
> lib/dateutil/relativedelta.py:Copyright (c) 2003-2005  Gustavo
> Niemeyer <gust...@niemeyer.net>
> lib/dateutil/relativedelta.py:__author__ = "Gustavo Niemeyer
> <gust...@niemeyer.net>"
> lib/dateutil/parser.py:Copyright (c) 2003-2005  Gustavo Niemeyer
> <gust...@niemeyer.net>
> lib/dateutil/parser.py:__author__ = "Gustavo Niemeyer
> <gust...@niemeyer.net>"
> lib/dateutil/zoneinfo/__init__.py:Copyright (c) 2003-2005  Gustavo
> Niemeyer <gust...@niemeyer.net>
> lib/dateutil/zoneinfo/__init__.py:__author__ = "Gustavo Niemeyer
> <gust...@niemeyer.net>"
> lib/dateutil/easter.py:Copyright (c) 2003-2005  Gustavo Niemeyer
> <gust...@niemeyer.net>
> lib/dateutil/easter.py:__author__ = "Gustavo Niemeyer
> <gust...@niemeyer.net>"
> lib/dateutil/__init__.py:Copyright (c) 2003-2005  Gustavo Niemeyer
> <gust...@niemeyer.net>
> lib/dateutil/__init__.py:__author__ = "Gustavo Niemeyer
> <gust...@niemeyer.net>"
>
> So relativedelta.py is already in Sage, no need to add it :)
>
> Cheers,
>
> Michael
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