import turtle
def drawSnake(rad,angle,len,nackrad):
    for i in range(len):
        turtle.circle(rad,angle) #画圆,参数分别是半径和角度
        turtle.circle(-rad,angle) #半径为负,反方向画圆
    turtle.circle(rad,angle/2)
    turtle.fd(rad) #fd函数表示直线爬行,rad表明爬行距离
    turtle.circle(nackrad+1,180) 
    turtle.fd(rad*2/3)
    print("hell")
def main():
    turtle.setup(1300,800,0,0) #启动一个窗口,参数分别是宽,高,初始坐标x,y.
    pythonsize = 30
    turtle.pensize(pythonsize) #画笔大小(像素)
    turtle.pencolor("blue") #画笔颜色(也可以#RGB)
    turtle.seth(-90) #运行角度(0-360,负值表示反方向)
    drawSnake(20,180,3,pythonsize/2)

main()

 

执行结果是:

Python绘图之(3)用turtle画蛇

 

 

 

 

import turtle
defdrawSnake(rad,angle,len,nackrad):
    for i in range(len):
        turtle.circle(rad,angle) #画圆,参数分别是半径和角度
        turtle.circle(-rad,angle) #半径为负,反方向画圆
    turtle.circle(rad,angle/2)
    turtle.fd(rad) #fd函数表示直线爬行,rad表明爬行距离
    turtle.circle(nackrad+1,180) 
    turtle.fd(rad*2/3)
    print("hell")
defmain():
    turtle.setup(1300,800,0,0) #启动一个窗口,参数分别是宽,高,初始坐标x,y.
    pythonsize = 30
    turtle.pensize(pythonsize) #画笔大小(像素)
    turtle.pencolor("blue") #画笔颜色(也可以#RGB)
    turtle.seth(-90) #运行角度(0-360,负值表示反方向)
    drawSnake(20,180,3,pythonsize/2)

main()

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