1 # drawSnake

  2 import turtle

  3 def drawSnake(rad,angle,len,neckrad):

  4         for i in range(len):

  5                 turtle.circle(rad,angle)

  6                 turtle.circle(-rad,angle)

  7         turtle.circle(rad,angle/2)

  8         turtle.fd(rad)

  9         turtle.circle(neckrad+1,180)

 10         turtle.fd(rad*2/3)

 11

 12 def main():

 13         turtle.setup(1300,800,0,0)

 14         pythonsize=30

 15         turtle.pensize(pythonsize)

 16         turtle.pencolor("blue")

 17         turtle.seth(-40)

 18         drawSnake(40,80,5,pythonsize/2)

 19

 20 main()

效果如下：