blink.py

import RPi.GPIO as GPIO

from time import sleep

LED_PIN = 25

print "Setting up GPIO"
GPIO.setmode(GPIO.BCM)
GPIO.setup(LED_PIN, GPIO.OUT)


    
def enable_led(should_enable):
    if should_enable:
        GPIO.output(LED_PIN, True)
    else:
        GPIO.output(LED_PIN, False)


enable_led(False)
print("LED is off")
sleep(2)
enable_led(True)
print("LED is oN")
sleep(2)
enable_led(False)
print("LED is off")
sleep(2)
enable_led(True)
print("LED is oN")
sleep(2)


GPIO.cleanup()