関連ワード:  how to make 2d list python    how to declare 2d list python    how to make 2 dimensional list in python    how to make an empty 2d list python    how to do 2d list in python    how to make 2d list to 1d list python    how to get column of 2d list python    how to declare empty 2d list in python    how to create 2d array from 2 lists python    how to make a copy of a 2d list in python