Hello, after fix the bug 11128, I get this error after try import pyplot:

$ python
Python 2.7.5 (default, Aug 12 2013, 12:36:20) 
[GCC 4.8.2 20130808 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib.pyplot
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/python2.7/site-packages/matplotlib/pyplot.py", line 98, in <module>
    _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
  File "/usr/lib64/python2.7/site-packages/matplotlib/backends/__init__.py", line 25, in pylab_setup
    globals(),locals(),[backend_name])
ImportError: No module named backend_qt4agg
>>> import matplotlib
>>> import matplotlib.pyplot as plt
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/python2.7/site-packages/matplotlib/pyplot.py", line 98, in <module>
    _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
  File "/usr/lib64/python2.7/site-packages/matplotlib/backends/__init__.py", line 25, in pylab_setup
    globals(),locals(),[backend_name])
ImportError: No module named backend_qt4agg
>>>

This error was fixed after install python-matplotlib-qt4. I think, how pyplot is default in matplotlib, matplotlib-qt4 must be required (mandatoty) during python-matplotib installation.

Thank you.

Reproducible: 

Steps to Reproduce: