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

[Michael D. <md...@st...>]

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 
>> <http://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
>>
>>
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