How do sets and frozensets compare in performance?

What are the main differences between sets and frozensets in Python?

Sets are mutable, meaning you can change them after creation, while frozensets are immutable and cannot be modified.

How does the performance of sets compare to frozensets?

Frozensets can be faster for membership tests because they are hashable and can be used as dictionary keys, while sets are not.

Are there any scenarios where I should prefer using frozensets over sets?

Yes, use frozensets when you need a constant collection of items that won't change, especially as keys in dictionaries.

Can you provide an example of when to use each?

Sure! Use a set for a collection of items that may change, like a shopping list, and a frozenset for fixed configurations, like a set of allowed user roles.