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          合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。
          廣告
        
                        
                
  

                

                
    
                
        
                
                            ![](http://h.yiniuedu.com/d2112c745eb1775a2ea0e4eb66035f47)
```
import  turtle
turtle.pensize(2)
for  i  in  range(4):
    turtle.fd(150)
    turtle.left(90)
    turtle.circle(150,-45)
    turtle.goto(0,0)
    turtle.left(45)
turtle.done()
```

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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