from turtle import * s = Screen() s.setup(800, 800) s.bgcolor('black') t = Turtle() t.color('green') t.speed(0) t.ht() for i in range(1000): s.tracer(0) t.goto(0,0) t.rt(1) t.clear() for j in range(i): t.circle(j, 89) t.fd(1) t.lt(i) s.tracer(1)