Warning

This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.

dijkstra_path

dijkstra_path(G, source, target, weight='weight')[source]

Returns the shortest path from source to target in a weighted graph G.

Parameters:

G : NetworkX graph

source : node

Starting node

target : node

Ending node

weight: string, optional (default=’weight’)

Edge data key corresponding to the edge weight
Returns:

path : list

List of nodes in a shortest path.
Raises:

NetworkXNoPath

If no path exists between source and target.

See also

bidirectional_dijkstra

Notes

Edge weight attributes must be numerical. Distances are calculated as sums of weighted edges traversed.

Examples

>>> G=nx.path_graph(5)
>>> print(nx.dijkstra_path(G,0,4))
[0, 1, 2, 3, 4]