터틀(이진나무)

initializeTurtle()
step = 128
range = 45

forward(step)

def drawLines(step, range, flag):
  if step < 16:
    return
  
  left(range + flag)     #원래 +
  forward(step)

  drawLines(step/2, range, flag + range)  #원래+

  backward(step)
  right(range*2 + flag)  #원래+
  forward(step)

  drawLines(step/2, range, flag - range)   #원래 -

  backward(step)
  left(range)

drawLines(step/2, range, 0)   #원래 flag 0
backward(step)