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

# astar_path_length¶

astar_path_length(G, source, target, heuristic=None, weight='weight')[source]

Return the length of the shortest path between source and target using the A* (“A-star”) algorithm.

Parameters: G : NetworkX graph source : node Starting node for path target : node Ending node for path heuristic : function A function to evaluate the estimate of the distance from the a node to the target. The function takes two nodes arguments and must return a number. NetworkXNoPath If no path exists between source and target.