title: how to draw communities with networkx
body: <p>How can I draw a graph with it's communities using python networkx like this image :</p>
  
  <p><a href="https://i.stack.imgur.com/OHoea.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/OHoea.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://data.graphstream-project.org/talks/CSSS2012/media/Community_Structure2.jpg" rel="noreferrer">image url</a></p>