single_source_shortest_path_length¶

single_source_shortest_path_length(G, source, cutoff=None)[source]¶

Compute the shortest path lengths from source to all reachable nodes.

Parameters:	G (NetworkX graph) source (node) – Starting node for path cutoff (integer, optional) – Depth to stop the search. Only paths of length <= cutoff are returned.
Returns:	lengths – (target, shortest path length) iterator
Return type:	iterator

Examples

>>> G = nx.path_graph(5)
>>> length = nx.single_source_shortest_path_length(G, 0)
>>> dict(length)
{0: 0, 1: 1, 2: 2, 3: 3, 4: 4}