blink the lights on the pi

blink_the_lights.py

import asyncio
import RPi.GPIO as GPIO
from time import sleep

GPIO.setmode(GPIO.BCM)

GPIO.setup(5,GPIO.OUT)
GPIO.setup(6,GPIO.OUT)
GPIO.setup(17,GPIO.OUT)

GPIO.setup(18, GPIO.IN, pull_up_down=GPIO.PUD_UP)

def blink_the_lights():
    for x in range(3):
        for x in [5,6,17]:
            GPIO.output(x, GPIO.HIGH)
        sleep(.5)
        for x in [5,6,17]:
            GPIO.output(x, GPIO.LOW)
        sleep(.5)


@asyncio.coroutine
def do_the_lights():
    while True:
        for x in [5,6,17]:
            GPIO.output(x, GPIO.HIGH)
            sleep(1)
            GPIO.output(x, GPIO.LOW)
            yield from asyncio.sleep(1)

def main():
    loop = asyncio.get_event_loop()

    def my_callback(channel):
        print("Blinking the lights!")
        loop.call_soon(blink_the_lights)

    GPIO.add_event_detect(18, GPIO.FALLING, callback=my_callback, bouncetime=300)

    try:
        print("Running the lights... press ctrl+c to stop")
        loop.create_task(do_the_lights())
        loop.run_forever()
    except:
        print("\nStopping the lights!")
    finally:
        GPIO.cleanup()

if __name__ == '__main__':
    main()