6.4 Code Practice You should see the following code in your programming environment:

import simplegui

def draw_handler(canvas):
# your code goes here

frame = simplegui. create_frame('Testing', 600, 600)
frame. set_canvas_background("Black")
frame. set_draw_handler(draw_handler)
frame. start()
Using the code above to write a program that, when run, generates nested squares, similar to those below:

Nested squares

Your image should be slightly different from the one above (for example, the color of the lines, the spacing between squares, or the shapes could be different).