python MQTT

要在Python中搭建MQTT服务器，您可以使用paho-mqtt库。以下是一个简单的示例代码：

import paho.mqtt.server as mqtt

# 回调函数，当有新的客户端连接时调用
def on_connect(client, userdata, flags, rc):
    print(f"New client connected: {client}")

# 回调函数，当有客户端发布消息时调用
def on_message(client, userdata, msg):
    print(f"Received message: {msg.topic} {msg.payload}")

# 创建MQTT服务器实例
mqtt_server = mqtt.MQTTServer()
mqtt_server.on_connect = on_connect
mqtt_server.on_message = on_message

# 启动服务器
mqtt_server.start()

这是一个简