Sort keys in dictionary by value in a list in Python

Question

I have seen this post and this post as well as many others, but haven\'t quite found the answer to my question nor can I figure it out.

I have a dictionary of list

Answer 1

Supply a key function, a lambda is easiest, and sort reversed:

sorted(Dict.keys(), key=lambda k: Dict[k][3], reverse=True)

The key function tells sorted what to sort by; the 4th item in the value for the given key.

Demo:

>>> sorted(Dict.keys(), key=lambda k: Dict[k][3], reverse=True)
['b', 'a', 'c']