In order to illustrate the same task can be carried out using different programming languages here is my loop program in Scratch.
And in Python
import turtle import time for x in range(0,72): turtle.left(5) for n in range(0,5): turtle.forward(150) turtle.left(90) time.sleep(60)
As mentioned before the time module is only included so a delay is included before the canvas is removed.
And Ruby (this works in kidsruby at least)
Turtle.draw do background white pencolor black 72.times do 4.times do forward (100) turnright (90) end turnright(5) end end
So you can do the same task in a very similar way in different languages.