// Exercise 1 EMJ27204 Question 4b

import time
import board
import digitalio

led1 = digitalio.DigitalInOut(board.GP1)
led1.direction = digitalio.Direction.OUTPUT
button1 = digitalio.DigitalInOut(board.GP18)
button1.direction = digitalio.Direction.INPUT

x:
  if (button.value == true) :
    while true:
      for i in range (5):
        led1.value = true
        time.sleep(0.5)
        led1.value = false
        time.sleep(0.5)
      led1.value = false
      time.sleep(2)
      return x
  else:
    led1.value = false
    return x