関連ワード:  how to write 2d array in python    how to make 2d array in python    how to make 2d array in python numpy    how to make a 2 dimensional array in python    how to make multidimensional array in python    how to make empty 2d array in python    how to make a 2d array in python using numpy    how to make a 1d array 2d in python    how to make a 2d array of zeros in python    how to make a copy of a 2d array in python