Python Set

In Python, a set is an unordered collection of unique elements. Sets are a useful data type when you need to store a collection of items and ensure that each item is unique.

Here's an example of how to create a set in Python:

my_set = {1, 2, 3, 4, 5}

In this example, we've created a set with five elements: the integers 1 through 5.

You can add elements to a set using the add() method:

my_set.add(6)

This adds the integer 6 to the set.

You can remove elements from a set using the remove() method:

my_set.remove(3)

This removes the integer 3 from the set.

You can also perform set operations such as union, intersection, and difference using the |, &, and - operators, respectively:

set1 = {1, 2, 3, 4, 5}
set2 = {4, 5, 6, 7, 8}

# union
union = set1 | set2    # {1, 2, 3, 4, 5, 6, 7, 8}

# intersection
intersection = set1 & set2    # {4, 5}

# difference
difference = set1 - set2    # {1, 2, 3}

These are just a few examples of the many ways that you can work with sets in Python. Sets are a useful data type when you need to store a collection of unique items and perform set operations such as union, intersection, and difference.