python字典函数映射

def main11():
    def forward():
        print("前进")

    def backward():
        print("后退")

    def stop():
        print("停止")

    def left():
        print("左转")

    def right():
        print("右转")

    event_mapping = {"forward": forward, "backward": backward, "stop": stop, "left": left, "right": right}

    import json

    json_str = '''
    {
        "info": "运动备注",
        "device": "turtle",
        "event": "left"
    }
    '''

    json_data = json.loads(json_str)
    event = json_data["event"]
    event_mapping[event]()

if __name__ == '__main__':
    main11()