Refer to the exhibit.

The correct URL from next page can be retrieved by using response.links['next']['url']. The use of response.headers.get('Link') could be easily replaced by an infinite loop like 'while True:' and it would be the same. They're just testing our knowledge here. The trick here is that once we reach the last page, response.links['next']['url'] within the 'try' context will fail and we'll move to the 'except' clause and the program will exit.