The parents dictionary in the final.py file is a dictionary whose keys are strings (names) and whose values are lists of strings (names). For example:

>>> parents['Mark Zuckerberg']

['Edward Zuckerberg', 'Karen Zuckerberg'] 

The parents of Mark Zuckerberg (the CEO of Facebook) are named Edward Zuckerberg and Karen Zuckerberg.

Complete the ancestors function, so that it returns a list of the ancestors of a person, including the person's parents, grandparents, great grandparents, and so on (assuming those ancestors are listed in the dictionary). Although the parents dictionary as it stands only goes back as far as two of Mark's great grandparents, you should assume that the ancestry information of a person might continue for an arbitrary number of generations.

When completed, here are some of examples of correct output:

>>> ancestors('Mark Zuckerberg')

['Edward Zuckerberg', 'Karen Zuckerberg', 'Miriam Hollnder', 'Jack Zuckerberg', 'Minnie Wiesenthal', 'Max Zuckerberg'] >>> ancestors('Edward Zuckerberg') ['Miriam Hollnder', 'Jack Zuckerberg', 'Minnie Wiesenthal', 'Max Zuckerberg'] >>> ancestors('Jack Zuckerberg') ['Minnie Wiesenthal', 'Max Zuckerberg']