Re: [Matplotlib-users] Pylab import error due to dateutil

[Damon M. <dam...@gm...>]

On Wed, Oct 10, 2012 at 3:09 PM, Michael Droettboom <md...@st...> wrote:
> I filed an issue for this.  We should try to get the fix into 1.2.x
>
> https://github.com/matplotlib/matplotlib/issues/1354
>
> Mike
>
>
> On 10/10/2012 09:00 AM, Michael Droettboom wrote:
>
> I think this stack overflow question [1] sort of sums up the problem --
> setuptools develop is kind of a hack and only really works if the source
> structure matches the installed structure.  That used to be true of
> matplotlib, but installing different packages based on the Python version
> breaks that assumption.
>
> A suggestion in the Stack Overflow entry is to install symlinks to fix this,
> and indeed doing this works:
>
>    cd lib
>    ln -s dateutil_py2 dateutil
>
> We can probably automate this in the setupegg.py script, but I don't think
> I'll have a chance to get to this today.  We can't just include the symlink
> in git, since it should point to the version that corresponds to the user's
> Python.
>
> [1]
> http://stackoverflow.com/questions/6019042/is-there-a-way-to-add-a-namespace-prefix-setuptools-package-distributions
>
> Mike
>
> On 10/10/2012 08:50 AM, Michael Droettboom wrote:
>
> This is related to using develop mode.  I never use that (I use virtualenvs
> instead), so this doesn't get much testing.  This seems to have broken when
> we started to ship separate versions of dateutil for python2 and python3.
> setuptools doesn't seem to like the fact that we rename dateutil_py2 to
> dateutil when installing (since in develop mode it doesn't really install or
> move anything).  That's problematic, of course.  I'll have to see if there's
> another way to handle this.
>
> Mike
>
> On 10/09/2012 09:36 PM, Gökhan Sever wrote:
>
> Hello,
>
> With a fresh
>
> git clone git://github.com/matplotlib/matplotlib.git
> sudo python setupegg.py develop
>
> Starting ipython --pylab I get this error:
>
> .../matplotlib/lib/matplotlib/dates.py in <module>()
>     120 import matplotlib.ticker as ticker
>     121
> --> 122 from dateutil.rrule import rrule, MO, TU, WE, TH, FR, SA, SU,
> YEARLY, \
>     123      MONTHLY, WEEKLY, DAILY, HOURLY, MINUTELY, SECONDLY
>     124 from dateutil.relativedelta import relativedelta
>
> ImportError: No module named dateutil.rrule
>
>
> Installing dateutil 1.5 fixes this.
>
> mpl install log shows the following:
>
> OPTIONAL DATE/TIMEZONE DEPENDENCIES
>               dateutil: matplotlib will provide
>                   pytz: matplotlib will provide
>
> Will dateutil be shipped with mpl or this line needs to be updated?
>
> Thanks.
>
>
> --
> Gökhan

Gökhan, did you implement the symlink fix? If so, would you mind
making a pull request out of it? I was just about to look into doing
this, but if you've done it already that'd save us some effort rolling
out fixes for 1.2.

Cheers.
Damon

-- 
Damon McDougall
http://www.damon-is-a-geek.com
B2.39
Mathematics Institute
University of Warwick
Coventry
West Midlands
CV4 7AL
United Kingdom