dfs_predecessors(G, source=None, depth_limit=None)
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 :None:None:`PADS`, with modifications to allow depth limits based on the Wikipedia article ":None:None:`Depth-limited search`".
<Unimplemented 'target' '.. _PADS: http://www.ics.uci.edu/~eppstein/PADS'>
<Unimplemented 'target' '.. _Depth-limited search: https://en.wikipedia.org/wiki/Depth-limited_search'>
Specify starting node for depth-first search.
Specify the maximum search depth.
A dictionary with nodes as keys and predecessor nodes as values.
Returns dictionary of predecessors in depth-first-search from source.
>>> G = nx.path_graph(4)
... nx.dfs_predecessors(G, source=0) {1: 0, 2: 1, 3: 2}
>>> nx.dfs_predecessors(G, source=0, depth_limit=2) {1: 0, 2: 1}See :
The following pages refer to to this document either explicitly or contain code examples using this.
networkx.algorithms.traversal.depth_first_search.dfs_predecessors
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