関連ワード:  how to declare 2d list python    how to create 2d list python    how to initialize 2d list python    how to define 2d list python    how to create empty 2d list python    how to initialize empty 2d list python    how to create 2 dimensional list in python    how to create multidimensional list in python    how to declare empty multidimensional list in python    how to define empty 2d list in python