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                            -  **\_\_new\_\_**
    對象實例化方法，其實這才是類里面第一個被調用的方法，在構造函數之前調用，之后才是\_\_init\_\_，只是這個比較特殊，一般不使用。多用于設計模式中的單例模式。單例模式是為了確保類有且只有一個對象。多用于日志記錄和數據庫操作，打印機后臺處理程序。這樣子可以避免對統一資源產生相互沖突的請求
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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