What are some common mistakes people make when using sets in Python?

What are some common mistakes people make when using sets in Python?

Some common mistakes include trying to use mutable types as set elements, or misunderstanding set operations.

Can you explain why mutable types can't be used in sets?

Mutable types, like lists or dictionaries, can change, which would break the set's requirement for unique, unchangeable elements.

What happens if I try to add a list to a set?

If you try to add a list to a set, you'll get a TypeError because lists are not hashable.

Are there any best practices for using sets in Python?

Yes, always use immutable types as set elements, and be mindful of set operations like union and intersection.