text: import RPi.GPIO as GPIO
  from time import sleep
  
  # setup GPIO
  pumpPin = 13
  GPIO.setmode(GPIO.BOARD)
  GPIO.setup(pumpPin, GPIO.OUT)
  
  state = False
  while True:
      print('State: ', state)
      if state == 0:
          GPIO.output(pumpPin, GPIO.LOW)
      elif state == 1:
          GPIO.output(pumpPin, GPIO.HIGH)
      state = not state
      sleep(2)