title: Can one get hierarchical graphs from networkx with python 3?
body: <p>I am trying to display a tree graph of my class hierarchy using <strong><code>networkx.</code></strong> I have it all graphed correctly, and it displays <em>fine</em>. But as a circular graph with crossing edges, it is a pure hierarchy, and it seems I ought to be able to display it as a tree.</p>
  
  <p>I have googled this extensively, and every solution offered involves using <strong><code>pygraphviz</code></strong>... but <strong><em>PyGraphviz does not work with Python 3 (documentation from the pygraphviz site)</em></strong>.</p>
  
  <p>Has anyone been able to get a tree graph display in Python 3?</p>