tes gpio rpi

#!/usr/bin/env python
try:
    from time import sleep
    import os
    import RPi.GPIO as GPIO

    GPIO.setmode(GPIO.BCM)

    GPIO.setup(12, GPIO.OUT)
    GPIO.setup(9, GPIO.OUT)

    GPIO.output(9,GPIO.LOW)
    GPIO.output(12,GPIO.LOW)

    while True:
        GPIO.output(9,GPIO.LOW)
        GPIO.output(12,GPIO.LOW)
        sleep(1)
        GPIO.output(9,GPIO.HIGH)
        GPIO.output(12,GPIO.HIGH)
        sleep(1)
except KeyboardInterrupt:
    GPIO.Cleanup()