3.5.4.11. networkx.MultiDiGraph.number_of_edges¶

MultiDiGraph.number_of_edges(u=None, v=None)¶

Return the number of edges between two nodes.

Parameters:	u, v : nodes, optional (default=all edges) If u and v are specified, return the number of edges between u and v. Otherwise return the total number of all edges.
Returns:	nedges : int The number of edges in the graph. If nodes u and v are specified return the number of edges between those nodes.

See also

size

Examples

>>> G = nx.Graph()   # or DiGraph, MultiGraph, MultiDiGraph, etc
>>> nx.add_path(G, [0, 1, 2, 3])
>>> G.number_of_edges()
3
>>> G.number_of_edges(0,1)
1
>>> e = (0,1)
>>> G.number_of_edges(*e)
1