How to draw a box around a set of nodes in pydot or networkx
<p>I have used pydot and networkx to build and show my graph. I have two question:</p>

<p>1- How can I differentiate  between the nodes with similar names?
for instance, there are two nodes with different values but I want to show both of them with 'node_x' in my graph.</p>

<p>2- How can I draw a rectangle around a set of nodes in my graph?</p>

<p>Thanks in advance,
Venus</p>
