new_contents: #!/usr/bin/python
  # -*- coding:utf-8 -*-
  
  import RPi.GPIO as GPIO
  import time
  
  led_pin = 24
  
  GPIO.setwarnings(False)
  GPIO.setmode(GPIO.BCM)
  GPIO.setup(led_pin, GPIO.OUT)
  
  print "linker led pin 24 (BCM GPIO)"
  
  while True:
  	GPIO.output(led_pin, True)
  	time.sleep(0.2)
  	GPIO.output(led_pin, False)
  	time.sleep(0.2)
   
  
subject: add flash light of python