関連ワード:  nonetype object has no attribute append python    nonetype object has no attribute append python list    nonetype object has no attribute append python error    attributeerror nonetype object has no attribute append python    python nonetype object has no attribute insert    python list attributeerror nonetype object has no attribute append    python empty list nonetype object has no attribute append    python attributeerror 'nonetype' object has no attribute 'insert'  
結果 : nonetype object has no attribute append python