I'm really stuck on this I have tried inputting this and still don't get the right answer. Here's the code below I tried out and still get 0/9! Please help me out. Thanks

Code:

def format_name(first_name: str, last_name: str) -> str: return last_name + ", " + first_name

Please help me out here since i'm stuck!

olg 9 to_listing Copy and paste the contents of your solution for format_name into the box below. Then, complete the following function according to its docstring description 2 1 Hef to_listing(first_name: str, last_name: str, num: str) -> str: """Return a string in the format "LAST_NAME, 3 FIRST_NAME: PHONE_NUMBER", where LAST_NAME, FIRST_NAME, and PHONE_NUMBER are replaced by last_name, first_name, and num. 4 5 6 >>> to_listing('David', 'Cohen', '12345') 'Cohen, David: 12345 7 8 History Submit