What is the difference between sets and frozensets in Python?

What is the difference between sets and frozensets in Python?

In Python, a set is mutable, meaning you can change its elements, while a frozenset is immutable and cannot be modified.

Can you give me an example of when to use a frozenset?

Sure! Use a frozenset when you need a constant collection of items, like keys in a dictionary, where immutability is required.

Are there any performance differences between sets and frozensets?

Yes, frozensets can be slightly faster for membership tests since they are immutable, but the difference is usually negligible.

Can I convert a set to a frozenset?

Absolutely! You can convert a set to a frozenset using the frozenset() constructor, like this: frozenset(my_set).

What about the methods available for each?

Sets have methods like add() and remove(), while frozensets have methods like union() and intersection(), but no modifying methods.