python学习之蟒蛇绘制

import turtle
turtle.setup(650,350,200,200)
turtle.pu()
turtle.fd(-250)
turtle.pendown()
turtle.width(25)
turtle.pencolor('purple')
turtle.seth(-40)
for i in range(4):
    turtle.circle(40,80)
    turtle.circle(-40,80)
turtle.circle(40,80/2)
turtle.fd(40)
turtle.circle(16,180)
turtle.fd(40*2/3)
turtle.done()