How to convert a list of values of a Python dictionary to a set

Question

I have the following dictionary:

aa={'a':[1,2,3,4], 'b':[3,4,5], 'c':[1,4,5]}

I want to covert its list of values to a set so that I will have unique values. How can I do it?

Output should be {1, 2, 3, 4, 5}

Answer 1

Here is the one-liner pythonic way to get the set of values from the list of values of a dictionary.

>>> aa={'a':[1,2,3,4], 'b':[3,4,5], 'c':[1,4,5]}

>>> {v for _,vv in aa.items() for v in vv}

{1, 2, 3, 4, 5}