text: #!/usr/bin/env python3
  # usage python3 publisher_demo.py [topic] [data]
  
  import paho.mqtt.client as mqtt
  import sys
  
  MQTT_BROKER_ADDRESS = "192.168.1.125"
  MQTT_PORT = 1883
  MQTT_STAYALIVE = 60
  
  topic = sys.argv[1]
  data = sys.argv[2]
  print("topic: " + str(topic) + "\t data: " + str(data))
  
  client = mqtt.Client()
  client.connect(MQTT_BROKER_ADDRESS, MQTT_PORT, MQTT_STAYALIVE)
  client.publish(topic, data)
  client.disconnect()
  