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 of nodes in a shortest path.
Return type:

list
Raises:

NetworkXNoPath – If no path exists between source and target.

Examples

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

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

See also

bidirectional_dijkstra()