networkx.algorithms.shortest_paths.astar.astar_path_length¶
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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.
Raises: NetworkXNoPath
– If no path exists between source and target.See also