関連ワード:  how to loop through a list in python    how to loop through a list in python backwards    how to loop through a list in python with index    how to iterate through a list in python    how to cycle through a list in python    how to iterate through a list in python backwards    how to iterate through a list in python with index    how to loop through a nested list in python    how to loop through a 2d list in python    how to loop through a linked list in python