Raspberry Pi GPIO Interrupt to MQTT

gpio.py

import RPi.GPIO as GPIO
import time
import paho.mqtt.client as paho



GPIO.setmode(GPIO.BCM)
#GPIO.setwarnings(False)
GPIO.setup(19, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) # push button
print("set up pin")

def alert_action(channel):
	print(time.strftime('%d/%m/%Y %X') + ' Edge detected on channel %s'%channel)
	time.sleep(0.01)         # need to filter out the false positive of some power fluctuation
        if GPIO.input(19) != GPIO.HIGH:
            print('Quitting event handler because this was probably a false positive')
            return
        mosq.publish("home/alert/doorbell",time.strftime('%x %X'))


mosq = paho.Client()
mosq.connect("raspberrypi.local")
mosq.loop_start()

GPIO.add_event_detect(19, GPIO.RISING, callback=alert_action, bouncetime=200)

while True:
	time.sleep(1)
	
GPIO.cleanup()
mosq.discconect()
mosq.loop_stop()

With thanks to the tutorials on http://raspi.tv/2013/how-to-use-interrupts-with-python-on-the-raspberry-pi-and-rpi-gpio