回答編集履歴
1
追記
    
        answer	
    CHANGED
    
    | @@ -5,7 +5,7 @@ | |
| 5 5 | 
             
            a = A
         | 
| 6 6 |  | 
| 7 7 | 
             
            a.append(1)
         | 
| 8 | 
            -
            print(A)
         | 
| 8 | 
            +
            print(A)     # => [1]と出力される
         | 
| 9 9 | 
             
            ```
         | 
| 10 10 |  | 
| 11 11 | 
             
            **実行** [Visualize Python, Java, JavaScript, C, C++, Ruby code execution](http://pythontutor.com/visualize.html#code=A%20%3D%20%5B1%5D%0Aa%20%3D%20A%0A%0Aa.append%282%29%0Aprint%28A%29&cumulative=false&curInstr=2&heapPrimitives=nevernest&mode=display&origin=opt-frontend.js&py=3&rawInputLstJSON=%5B%5D&textReferences=false)
         | 
