# -*- coding: utf-8 -*-

import turtle as tt
win = tt.Screen()
######
tt.shape("classic")
tt.pencolor("blue")
tt.speed(0)

for i in range(0,361,30):
    tt.circle(100) # 畫一個半徑為(i*10)的圓
    tt.seth(i)


######
win.exitonclick()