python蟒蛇绘制

#蟒蛇绘制
import turtle #图像绘制库

def drawSnack(rad,angle,len,neckrad): #定义函数
    for i in range(len):
        turtle.circle(rad,angle) #弧形移动位置和弧度
        turtle.circle(-rad,angle)
    turtle.circle(rad,angle/2)
    turtle.fd(rad) #直线移动距离
    turtle.circle(neckrad+1 , 180)
    turtle.fd(rad*2/3)

def main():
    turtle.setup(1300,800,0,0)  #启动一个1300*800的窗口
    pythonsize = 30
    turtle.pensize(pythonsize) #运行轨迹的宽度
    turtle.pencolor(‘blue‘) #运行轨迹的颜色
    turtle.seth(-40) #运行的方向
    drawSnack(40,80,5,pythonsize/2)

main()