The SILShack class blog - Fall 2013

import turtle
from turtlehack import *

bri=turtle.Turtle()
bri.penup()
bri.setpos(0,-100)
bri.pendown()
for i in range(0,200):
   bri.circle(i)
   bri.color(random_color())
   random_circle(bri,25,max_size=100)