difference

difference(G, H, create_using=None)

Return a new graph that contains the edges that exist in G but not in H.

The node sets of H and G must be the same.

Parameters :

G,H : graph

A NetworkX graph. G and H must have the same node sets.

create_using : NetworkX graph

Use specified graph for result. Otherwise a new graph is created with the same type as G.

Notes

Attributes from the graph, nodes, and edges are not copied to the new graph. If you want a new graph of the difference of G and H with with the attributes (including edge data) from G use remove_nodes_from() as follows

>>> G=nx.path_graph(3)
>>> H=nx.path_graph(5)
>>> R=G.copy()
>>> R.remove_nodes_from(n for n in G if n in H)