assistant.py

from Adafruit_IO import MQTTClient
import RPi.GPIO as IO

ADAFRUIT_IO_USERNAME = "xxxxxxxxxx"
ADAFRUIT_IO_KEY = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

IO.setwarnings(False)
IO.setmode(IO.BOARD)
IO.setup(11,IO.OUT)

def connected(client):
      print("Subscribing")
      client.subscribe('Relay1') # or change to whatever name you used

# this gets called every time a message is received
def message(client, feed_id, payload):
     if payload == "1":
        print ("Turning ON the light")
	IO.output(11,IO.HIGH)
     elif payload == "0":
	print ("Turning OFF the light")
	IO.output(11,IO.LOW)
     else:
        print ("Message from Adafruit: %s" % payload)

client = MQTTClient(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)

# Setup the callback functions defined above.
client.on_connect    = connected
client.on_message    = message

client.connect()
print("Connected to Adafruit IO")
client.loop_blocking() # block forever on client loop