six inclusion for dateutil on py3 doesn't work

[mdboom]

I just installed the current HEAD to a fresh python3 install. It all installs fine, but if I try to do ipython --pylab, I get this ImportError:

/usr/local/Cellar/python3/3.2.3/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/dateutil/rrule.py in <module>()
     16 import sys
     17 
---> 18 from six import advance_iterator, integer_types
     19 
     20 __all__ = ["rrule", "rruleset", "rrulestr",

ImportError: No module named six

The six.py introduced in lib/dateutil_py3 in 07d8416 is included in my site-packages/dateutil folder, but the attempted relative import doesn't work (thanks to PEP 328).

To solve this, matplotlib should install six directly into site-packages when on python 3 if not already present, or alternatively change all six imports in dateutil to from .six import ....

(An easy workaround for users is of course to pip install six or pip install python-dateutil, which includes six as a dependency.)

[mdboom]

Sorry -- that's just a big oops on my part. I will fix this before the upcoming release.

[djsutherland]

No worries, it's obviously easy to work around, just wanted to make sure it didn't make it into the release. :)

[mdboom]

@dougalsutherland : Can you check that the attached PR resolves the issue for you?

[djsutherland]

Yep, works for me.