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dfs_labeled_edges¶

dfs_labeled_edges
(G, source=None)[source]¶ Produce edges in a depthfirstsearch (DFS) labeled by type.
Parameters: G : NetworkX graph
source : node, optional
Specify starting node for depthfirst search and return edges in the component reachable from source.
Returns: edges: generator
A generator of edges in the depthfirstsearch labeled with ‘forward’, ‘nontree’, and ‘reverse’.
Notes
Based on http://www.ics.uci.edu/~eppstein/PADS/DFS.py by D. Eppstein, July 2004.
If a source is not specified then a source is chosen arbitrarily and repeatedly until all components in the graph are searched.
Examples
>>> G = nx.Graph() >>> G.add_path([0,1,2]) >>> edges = (list(nx.dfs_labeled_edges(G,0)))