関連ワード:  how to write a array in python    how to create a array in python    how to write a 2d array in python    how to write a numpy array in python    how to write a 3d array in python    how to write empty array in python    how to write 1d array in python    how to create a 2d array in python    how to create a numpy array in python    how to make a 3d array in python