new_contents: import RPi.GPIO as GPIO
  from time import sleep
  
  GPIO.setmode(GPIO.BCM)
  
  GPIO.setup(9, GPIO.OUT)
  GPIO.setup(11, GPIO.OUT)
  
  while 1:
    GPIO.output(9, True)
    sleep(0.25)
    GPIO.output(9, False)
    sleep(0.25)
  
    GPIO.output(11, True)
    sleep(0.25)
    GPIO.output(11, False)
    sleep(0.25)
  
    #GPIO.output(11, True)
    #sleep(0.25)
    #GPIO.output(11, False)
    #sleep(0.25)
  
    #GPIO.output(11, True)
    #sleep(0.25)
    #GPIO.output(11, False)
    #sleep(0.25)
  
  GPIO.cleanup()
  
subject: Write in gpio on raspberry