pahp mqtt遇到的一个警告

[WKTYesq]

我使用pahp-mqtt遇到一个警告，如下所示：

import paho.mqtt.client as mqtt


MQTT_SERVER = 'mqtt.lfzk.com'
MQTT_PORT = 1883
MQTT_TOPIC = 'ws'
MQTT_USERNAME = 'remote'
MQTT_PASSWORD = 'lfzk@1020@re'
MQTT_CLIENT_ID = 'mqttx_0ea89a05'


# 当客户端收到连接时的回调
def on_connect(client, userdata, flags, rc):
    if rc == 0:
        print("已连接到MQTT代理！")
        # 订阅主题
        client.subscribe(MQTT_TOPIC)
    else:
        print(f"连接失败，返回码 {rc}")


def on_message(client, userdata, msg):
    print(msg.topic+" "+str(msg.payload.decode("utf-8")))


if __name__ == '__main__':
    client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION1)

    client.on_connect = on_connect
    client.message_callback_add(MQTT_TOPIC, on_message)
    # client.on_message = on_message
    client.username_pw_set(MQTT_USERNAME, MQTT_PASSWORD)
    client.connect(MQTT_SERVER, MQTT_PORT, 60)

    client.loop_forever()

控制台：

D:\PythonWorkSpace\IPC\mqtt_client.py:28: DeprecationWarning: Callback API version 1 is deprecated, update to latest version
  client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION1)
已连接到MQTT代理！
ws {
    "code": "200",
    "data": {
        "msgId": "767",
        "sn": "211323091015",
        "time": 1717468404887,
        "value": {
            "production": "6224",
            "production1": "7174",
            "production2": "6592",
            "runtime": "288",
            "runtime1": "277",
            "runtime2": "302",
            "status": "0",
            "status1": "1",
            "status2": "0"
        }
    }
}

这个警告我不知道能不能处理 DeprecationWarning: Callback API version 1 is deprecated, update to latest version client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION1)

我将client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION1)修改为client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)后运行：

D:\PythonWorkSpace\IPC\.venv\Scripts\python.exe D:\PythonWorkSpace\IPC\mqtt_client.py 
Traceback (most recent call last):
  File "D:\PythonWorkSpace\IPC\mqtt_client.py", line 36, in <module>
    client.loop_forever()
  File "D:\PythonWorkSpace\IPC\.venv\Lib\site-packages\paho\mqtt\client.py", line 2297, in loop_forever
    rc = self._loop(timeout)
         ^^^^^^^^^^^^^^^^^^^
  File "D:\PythonWorkSpace\IPC\.venv\Lib\site-packages\paho\mqtt\client.py", line 1686, in _loop
    rc = self.loop_read()
         ^^^^^^^^^^^^^^^^
  File "D:\PythonWorkSpace\IPC\.venv\Lib\site-packages\paho\mqtt\client.py", line 2100, in loop_read
    rc = self._packet_read()
         ^^^^^^^^^^^^^^^^^^^
  File "D:\PythonWorkSpace\IPC\.venv\Lib\site-packages\paho\mqtt\client.py", line 3142, in _packet_read
    rc = self._packet_handle()
         ^^^^^^^^^^^^^^^^^^^^^
  File "D:\PythonWorkSpace\IPC\.venv\Lib\site-packages\paho\mqtt\client.py", line 3814, in _packet_handle
    return self._handle_connack()
           ^^^^^^^^^^^^^^^^^^^^^^
  File "D:\PythonWorkSpace\IPC\.venv\Lib\site-packages\paho\mqtt\client.py", line 3934, in _handle_connack
    on_connect(
TypeError: on_connect() takes 4 positional arguments but 5 were given

Process finished with exit code 1

求大佬帮忙解决，谢谢

[MattBrittan]

See the migrations doc for info on this. But, in summary:

Expected signature for callback API version 2: connect_callback(client, userdata, connect_flags, reason_code, properties)
Expected signature for callback API version 1 change with MQTT protocol version:
* For MQTT v3.1 and v3.1.1 it's: connect_callback(client, userdata, flags, rc)
* For MQTT v5.0 it's: connect_callback(client, userdata, flags, reason_code, properties)

So you need to update your callbacks when changing the API version.

Note: I only speak English (and have not seen any Chinese responses in this repo).

[etimes2008]

这个版本是警告，能照样运行，估计后面版本会默认是api2了

[MattBrittan]

Closing this as it looks like a response has been provided.