title: Drawing a graph partition with the networkX package in Python
body: <p>I have a graph object <code>G</code> with nodes from <code>0</code> to <code>n-1</code> and two lists <code>L1</code> <code>L2</code> which are a partition of the nodes of <code>G</code>. I'd like to draw <code>G</code> in such a way that the nodes result divided in two blocks: one relative to <code>L1</code> and the other relative to <code>L2</code>. The aim of the picture should be to evidentiate the connections between <code>L1</code> and <code>L2</code>. Can you help me do perform this task? </p>
  
  <p>Many thanks in advance.</p>