Python 海龟绘制正方形和风轮

绘制正方形：

代码如下

import turtle
turtle.setup(650, 350, 200, 200) 
turtle.pencolor("black")
turtle.penup()                   
turtle.bk(50)                    
turtle.left(90)                  
turtle.fd(50)                    
turtle.right(90)                 
turtle.pendown()                 
turtle.pensize(5)                
turtle.fd(100)                   
turtle.right(90)
turtle.fd(100)
turtle.right(90)
turtle.fd(100)
turtle.right(90)
turtle.fd(100)
turtle.done()

运行效果：

绘制风轮：

代码如下：

import turtle
turtle.setup(650, 350, 200, 200)
turtle.pencolor("black")
turtle.left(90)
turtle.fd(120)
turtle.right(90)
turtle.circle(-120,45)
turtle.right(90)
turtle.fd(120)
turtle.right(225)
turtle.fd(120)
turtle.right(90)
turtle.circle(-120,45)
turtle.right(90)
turtle.fd(120)
turtle.right(225)
turtle.fd(120)
turtle.right(90)
turtle.circle(-120,45)
turtle.right(90)
turtle.fd(120)
turtle.right(225)
turtle.fd(120)
turtle.right(90)
turtle.circle(-120,45)
turtle.right(90)
turtle.fd(120)
turtle.done()

运行效果：