関連ワード:  check if multiple variables are none python    check if all variables are none python    check if multiple values are none python    check if two variables are none python    check if multiple variables are not none python    check if all values are none python    check if all values in list are none python    python check if all arguments are none    python check if two values are none    python check if many variables are none  
結果 : check if multiple variables are none python