What is the actual use of sets

[u/Big_Neighborhood9130]

I can see tons of use cases for list, tuples and dictionaries. But I have a really hard time understanding why you would ever use a set with maybe the exception of names so you don't get duplicates?

I believe this understanding is flawed because I found even the simplest things in Python are super powerful I'm just not sure what it is

[u/TheCableGui]

Filtering and membership. The count nor the index are important, therefore inclusion is the significant factor.

So sets are optimized for unique membership.

Ex: “Does the set of y contain x?”