How does frozenset perform compared to set in Python?

How does frozenset perform compared to set in Python?

Frozenset is an immutable version of a set in Python. It generally has similar performance characteristics, but since it's immutable, it can be slightly faster for certain operations like membership tests.

What are the advantages of using frozenset over set?

The main advantages of frozenset include immutability, which makes it hashable and usable as a key in dictionaries, and it can be used in situations where a constant set is needed.

Are there any performance benchmarks available for frozenset?

Yes, performance benchmarks show that frozenset can be faster for membership tests due to its immutability, but the difference is often negligible for small sets.

Can frozenset be modified after creation?

No, frozenset cannot be modified after creation. You cannot add or remove elements from it, which is a key difference from a regular set.

When should I use frozenset instead of set?

Use frozenset when you need a constant set of values that should not change, or when you need to use the set as a dictionary key.