関連ワード:  how to write 2d array python    how to make 2d array python    how to make 2d array python numpy    how to make 2d matrix python    how to make empty 2d array python    how to make multidimensional array in python    how to make 2d array into 1d array python    how to write a 2d array to a file in python    how to write a 2d array to a csv file in python