text: #! /usr/bin/python
  import time
  import RPi.GPIO as GPIO
  
  LED_PIN=18
  GPIO.setmode(GPIO.BCM)
  
  GPIO.setup(LED_PIN,GPIO.OUT)
  try:
  	while True:
  		print "LED is blink"
  		GPIO.output(LED_PIN,GPIO.HIGH)
  		time.sleep(1)
  		GPIO.output(LED_PIN,GPIO.LOW)
  		time.sleep(1)
  except KeyboardInterrupt:
  	GPIO.cleanup()
  