ImportError: No module named backend_tkagg

J'ai de telles importations et code:

import pandas as pd
import numpy as np
import statsmodels.formula.api as sm
import matplotlib.pyplot as plt    


#Read the data from pydatasets repo using Pandas
url = './file.csv'
white_side = pd.read_csv(url)    
#Fitting the model    
model = sm.ols(formula='budget ~ article_size',
               data=white_side,
               subset=white_side['producer'] == "Peter Jackson")
fitted = model.fit()
print fitted.summary()

Après l'exécution de ce code, j'ai ces erreurs:

/usr/bin/python2.7 /home/seth/PycharmProjects/osiris_project/PMN_way/start.py
Traceback (most recent call last):
File "/home/seth/PycharmProjects/osiris_project/PMN_way/start.py", line 5, in <module>
import matplotlib.pyplot as plt
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_tkagg
Process finished with exit code 1

Je suis sur openSUSE et pycharm community edition dernière version installé avec les pandas, numpy, etc
Comment puis-je résoudre ce problème?

OriginalL'auteur smith | 2013-12-14