I have a dictionary and im creating a function that takes the each value that is the same and make a new dictionary with the keys of value. i have some doc test for some example. i believe this can be done in one line using list comprehension.

```
>>> rating = {"bob": "excellent", "barnum": "passing", "beatrice": "satisfactory", "bernice": "passing", "ben": "no pass", "belle": "excellent", "bill": "passing", "bernie": "passing", "baxter": "excellent"}
>>> new_dict(rating) # new_dict is the function
>>> {'excellent': ['bob', 'belle', 'baxter'], 'passing': ['barnum', 'bernice', 'bill', 'bernie'], 'satisfactory': ['beatrice'], 'no pass': ['ben']}

```