title: Distance between nodes using python networkx
body: <p>I am new to <code>NetworkX</code>, and I need to find the distance between two nodes. I have given it a go, but most of the searches lead to the <code>DFS</code>, <code>Dijkstra</code>, etc. approaches, which is not my point. I only want the Euclidean distance between two sets of coordinates, where the latter represent nodes in the graph.</p>