How do I create a set in Python?

How do I create a set in Python?

You can create a set in Python using curly braces or the set() function. For example: my_set = {1, 2, 3} or my_set = set([1, 2, 3]).

What are the benefits of using sets?

Sets are useful for storing unique items and provide efficient membership testing. They also support mathematical operations like union and intersection.

Can I create a set with duplicate values?

No, sets automatically remove duplicate values. If you try to add duplicates, they will not be included in the set.

How do I add or remove items from a set?

You can add items using the add() method, like my_set.add(4), and remove items with remove() or discard(), like my_set.remove(2).

What happens if I try to remove an item that doesn't exist?

If you use remove() and the item doesn't exist, it will raise a KeyError. However, discard() will not raise an error if the item is not found.