networkx.algorithms.traversal.depth_first_search.dfs_successors¶
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dfs_successors
(G, source=None, depth_limit=None)[source]¶ Return dictionary of successors in depth-first-search from source.
Parameters: - G (NetworkX graph)
- source (node, optional) – Specify starting node for depth-first search and return edges in the component reachable from source.
- depth_limit (int, optional (default=len(G))) – Specify the maximum search depth.
Returns: succ – A dictionary with nodes as keys and list of successor nodes as values.
Return type: Examples
>>> G = nx.path_graph(5) >>> nx.dfs_successors(G, source=0) {0: [1], 1: [2], 2: [3], 3: [4]} >>> nx.dfs_successors(G, source=0, depth_limit=2) {0: [1], 1: [2]}
Notes
If a source is not specified then a source is chosen arbitrarily and repeatedly until all components in the graph are searched.
The implementation of this function is adapted from David Eppstein’s depth-first search function in PADS, with modifications to allow depth limits based on the Wikipedia article “Depth-limited search”.