関連ワード:  how to create empty lists in python    how to declare empty list in python    how to initialize empty list in python    how to set empty list in python    how to create an empty lists in python    how to create an empty list in python of size n    how to create empty linked list in python    how to create empty 2d list in python    how to create empty nested list in python    how to create an empty list in python and append