import paho.mqtt.client as mqtt

# MQTT 代理设置
broker_address = "127.0.0.1"
broker_port = 41883
username = "admin"
password = "public"

# 创建客户端实例
client = mqtt.Client()

# 设置用户名和密码
client.username_pw_set(username, password)

# 连接到 MQTT 代理
client.connect(broker_address, broker_port)

# 可以继续执行 MQTT 操作（发布、订阅等）