関連ワード:  how to create new linked list python    how to create a linked list python    how to create new node in linked list python    how to create a node in linked list python    how to create a linked list class in python    how to create a singly linked list in python    how to create a doubly linked list in python    how to create a circular linked list in python    how to create a linked list from an array in python    how to create an empty linked list python