sumo 最短路径代码

以下是使用Python和SUMO API实现最短路径的示例代码：

import os
import sys
import optparse
import random
import time
import sumolib
import traci

def get_options():
    opt_parser = optparse.OptionParser()
    opt_parser.add_option("--nogui", action="store_true",
                          default=False, help="run the commandline version of the simulation")
    options, args = opt_parser.parse_args()
    return options

def run():
    options = get_options()

    # start sumo
    if options.nogui:
        sumoBinary = sumolib.checkBinary('sumo')
    else:
        sumoBinary = sumolib.checkBinary('sumo-gui')
    sumoProcess = subprocess.Popen([sumoBinary, "-c", "path/to/your/sumo_config_file.sumocfg"], stdout=sys.stdout, stderr=sys.stderr)

    # wait for sumo to start
    traci.init(port=8813)

    # get all edges in the network
    edges = traci.edge.getIDList()

    # choose a random start and end edge
    start_edge = random.choice(edges)
    end_edge = random.choice(edges)

    # compute the shortest path using the dijkstra algorithm
    path = traci.simulation.findRoute(start_edge, end_edge)

    # print the path and its length
    print("Shortest path from", start_edge, "to", end_edge, "is", path)
    print("Length:", traci.simulation.findRouteLength(start_edge, end_edge))

    # close sumo
    traci.close()
    sumoProcess.terminate()

if __name__ == "__main__":
    run()

请注意，此示例代码假定已按照SUMO的安装说明正确安装了SUMO和SUMO API，并且已经创建了适当的SUMO配置文件。您需要将 `path/to/your/sumo_config_file.sumocfg` 替换为您的 SUMO 配置文件的路径。