Python List Similarity | List Comprehension Tutorial

Introduction

In Python, it is often necessary to compare two lists and find the elements that exist in both lists. This can be achieved by using list comprehension, a powerful feature of Python that allows us to create new lists based on existing lists.

Skills Graph

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List Similarity

Problem

Write a function similarity(a, b) that takes two lists a and b as arguments and returns a new list that contains only the elements that exist in both a and b.

To solve this problem, we can use list comprehension to iterate over the elements of a and check if they exist in b. If an element exists in both lists, we add it to a new list.

Example

similarity([1, 2, 3], [1, 2, 4]) ## [1, 2]

In this example, the function similarity takes two lists [1, 2, 3] and [1, 2, 4] as arguments. The function returns a new list [1, 2] that contains only the elements that exist in both lists.

Summary

In this challenge, you have learned how to find the similarity between two lists using list comprehension in Python. This is a useful technique that can be used in many different applications, such as data analysis and machine learning.

Comparing Python Lists with Comprehension