from microbit import*


def carre(i,color):
  for x in range(i):
      for y in range(i):
          display.set_pixel(x,y,color)
          
while True:
  carre(1,9)
  sleep(500)
  carre(2,9)
  sleep(500)
  carre(3,9)
  sleep(500)
  carre(4,9)
  sleep(500)
  carre(5,9)
  sleep(500)
  
  # eteindre : 
  carre(5,0)
  sleep(1000)