利用ChatGPT產生發布MQTT主題的Python程式

 本文利用ChatGPT來產生物聯網MQTT之Python程式，其提示語和所產生的程式如下：

程式碼：

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import paho.mqtt.client as mqtt import random import time # MQTT broker 設定 BROKER = "broker.mqttgo.io" PORT = 1883 TOPIC = "sensor/light" CLIENT_ID = "LightSensorPublisher" # 建立 MQTT 客戶端 client = mqtt.Client(CLIENT_ID) def publish_light_data(): try: client.connect(BROKER, PORT, 60) print(f"Connected to MQTT broker: {BROKER}") while True: # 模擬光線亮度數據 (0 到 1000 lux) light_intensity = random.randint(0, 1000) payload = {"light_intensity": light_intensity} client.publish(TOPIC, str(payload)) print(f"Published: {payload} to topic {TOPIC}") time.sleep(5) # 每 5 秒發佈一次 except KeyboardInterrupt: print("\nDisconnected from broker.") client.disconnect() if __name__ == "__main__": publish_light_data()

把上述程式利用Python IDLE來執行，發生下列錯誤的問題。

把上述問題，詢問ChatGPT，其回答如下：

更新程式碼如下：

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import paho.mqtt.client as mqtt import random import time # MQTT broker 設定 BROKER = "broker.mqttgo.io" PORT = 1883 TOPIC = "sensor/light" CLIENT_ID = "LightSensorPublisher" # 建立 MQTT 客戶端 client = mqtt.Client(client_id=CLIENT_ID, protocol=mqtt.MQTTv311, callback_api_version=5) def publish_light_data(): try: client.connect(BROKER, PORT, 60) print(f"Connected to MQTT broker: {BROKER}") while True: # 模擬光線亮度數據 (0 到 1000 lux) light_intensity = random.randint(0, 1000) payload = {"light_intensity": light_intensity} client.publish(TOPIC, str(payload)) print(f"Published: {payload} to topic {TOPIC}") time.sleep(5) # 每 5 秒發佈一次 except KeyboardInterrupt: print("\nDisconnected from broker.") client.disconnect() if __name__ == "__main__": publish_light_data()

經測試方法1，發生下列問題。

採用方法2，重新安裝paho-mqtt套件。

執行結果：

MQTTGO broker的畫面如本文最上圖，記得要按下連線鈕，並訂閱sensor/light主題。