Arch Linux

Description:
After update to python3 (currently in testing) it is impossible to import pylab due to problems with gtk libraries used in matplotlib(?). I guess it has to do something with the gtk usage in matplotlib when showing the graph.

Additional info:
* package version(s)
Using most up to date testing repo.

* config and/or log files etc.
It ends up with an error and spits that out:
[...ocuments/cam_phys]$ python2 gns-ank@Archx200s[7:45]
Python 2.7 (r27:82500, Oct 6 2010, 12:29:13)
[GCC 4.5.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pylab
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/site-packages/pylab.py", line 1, in <module>
from matplotlib.pylab import *
File "/usr/lib/python2.7/site-packages/matplotlib/pylab.py", line 259, in <module>
from matplotlib.pyplot import *
File "/usr/lib/python2.7/site-packages/matplotlib/pyplot.py", line 95, in <module>
new_figure_manager, draw_if_interactive, show = pylab_setup()
File "/usr/lib/python2.7/site-packages/matplotlib/backends/__init__.py", line 25, in pylab_setup
globals(),locals(),[backend_name])
File "/usr/lib/python2.7/site-packages/matplotlib/backends/backend_gtkagg.py", line 10, in <module>
from matplotlib.backends.backend_gtk import gtk, FigureManagerGTK, FigureCanvasGTK,\
File "/usr/lib/python2.7/site-packages/matplotlib/backends/backend_gtk.py", line 27, in <module>
from matplotlib.backends.backend_gdk import RendererGDK, FigureCanvasGDK
File "/usr/lib/python2.7/site-packages/matplotlib/backends/backend_gdk.py", line 29, in <module>
from matplotlib.backends._backend_gdk import pixbuf_get_pixels_array
RuntimeError: could not find _PyGtk_API object
>>>

Steps to reproduce:
open python2 or ipython and type in "import pylab" (note, that "import matplotlib" works, but "import matplotlib.pyplot" doesnt)