This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.
- dfs_edges(G, source=None)¶
Produce edges in a depth-first-search (DFS).
G : NetworkX graph
source : node, optional
Specify starting node for depth-first search and return edges in the component reachable from source.
A generator of edges in the depth-first-search.
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.
>>> G = nx.Graph() >>> G.add_path([0,1,2]) >>> print(list(nx.dfs_edges(G,0))) [(0, 1), (1, 2)]