関連ワード:  how to make 2d grid in python    how to make 2d array in python    how to make 2d array in python numpy    how to create 2d array in python    how to create 2d array in python using numpy    how to do 2d array in python    how to get 2d array in python    how to make empty 2d array in python    how to create a 2d array in python using for loop    how to get 2d array input in python