関連ワード:  how to declare a 3d array in python    how to create a 3d array in python    how to initialize a 3d array in python    how to declare a multidimensional array in python    how to define a 3d array in python    how to create a multidimensional array in python    how to initialize a multidimensional array in python    how to define a multidimensional array in python    how to create 3d array in python using numpy    how to create a multidimensional numpy array in python