title: How to find the correct version of PyBindGen for Python Bindings
body: <p>Currently, I am working on the Ns3 simulator and now trying to enable the pyviz visualizer. According to the <a href="https://www.nsnam.org/wiki/PyViz" rel="nofollow noreferrer">doc</a>, I have downloaded the three dependencies which are </p>
  
  <blockquote>
    <p>py27-pygtk<br>
    py27-pygoocanvas<br>
    py27-pygraphviz</p>
  </blockquote>
  
  <p>Now in order to use this, I still need to enable the python bindings which I used <code>/usr/bin/python2.7 ./waf configure</code> wanna to check what needs for  enabling python bindings. The result shows that </p>
  
  <blockquote>
    <p>Python Bindings : not enabled (PyBindGen version not correct and newer version could not be retrieved) </p>
  </blockquote>
  
  <p>So I checked the <a href="https://pypi.python.org/pypi/PyBindGen#downloads" rel="nofollow noreferrer">Doc</a> and downloaded PyBindGen (version <strong>0.18.0</strong>). The output shows </p>
  
  <blockquote>
    <p>Installed /Library/Python/2.7/site-packages/PyBindGen-0.18.0-py2.7.egg 
    Processing dependencies for PyBindGen==0.18.0
    Finished processing dependencies for PyBindGen==0.18.0  </p>
  </blockquote>
  
  <p>After I ran the configuration check the results still showed that <strong>PyBindGen version not correct and newer version could not be retrieved</strong>
  So I presume that is that because I installed the wrong version of PyBindGen? If so how can I get the suitable version for enabling Python Binding? </p>
  
  <p>I would appreciate if there is someone who can help me figure it out. Many thanks. </p>
  
  <p>S.</p>