import turtledef 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()