Multiple Sets Intersection in Python

In this article, a List of sets is given our task is to write a program to perform their intersection using Python.

Examples of finding the intersection of multiple sets

Input : test_list = [{5, 3, 6, 7}, {1, 3, 5, 2}, {7, 3, 8, 5}, {8, 4, 5, 3}]
Output : {3, 5}
Explanation : 3 and 5 is present in all the sets.

Method 1: Using a Logical operator

This is the simplest method to get the intersection of multiple sets using the Python logical operator

Output:

{21, 5}

Method 2: Using intersection() + * operator

In this, we will perform tasks to get intersections using intersection() and the * operator is used to pack all the sets together.

Output:

The original list is : [{3, 5, 6, 7}, {1, 2, 3, 5}, {8, 3, 5, 7}, {8, 3, 4, 5}]
Intersected Sets : {3, 5}

Method 3: Using reduce() + and_ operator

In this, we will perform intersection using and_ operator and Python reduce() does the task of getting all the sets packed together for the required operation.

Output:

The original list is : [{3, 5, 6, 7}, {1, 2, 3, 5}, {8, 3, 5, 7}, {8, 3, 4, 5}]
Intersected Sets : {3, 5}