蟒蛇

import turtle

def drawSnake (rad , angle , len , neckrad):
    for i in range (len):
        turtle. circle(rad , angle)
        turtle. circle(-rad , angle)
    turtle. circle(rad , angle/2)
    turtle. fd(rad)
    turtle. circle(neckrad + 1 , 180)
    turtle. fd(rad * 2/3)

def main():
    turtle. setup(1300 , 800 , 0 , 0)
    pythonsize = 30
    turtle.pensize (pythonsize)
    turtle.pencolor("blue")
    turtle.seth(-40)
    drawSnake (40 , 80 , 5 , pythonsize/2)

main()