text: import RPi.GPIO as IO
  import time
  
  IO.setmode(IO.BOARD)
  IO.setup(19, IO.OUT)
  IO.setup(21, IO.OUT)
  
  def main():
    while True:
      print("Hello")
      IO.output(21, IO.HIGH)
      IO.output(19, IO.HIGH)
      time.sleep(5)
  
  
  if __name__ == "__main__":
      main()