Constructing Regular Expression Character Classes

Lab Steps

Constructing Regular Expression Character Classes

The hands-on lab is part of these learning paths

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Time Limit30m


Regular Expressions are a tool for searching and manipulating text. Most popular programming languages feature support for them and they are used widely across different disciplines. Regardless of whether you are a developer or engineer, being comfortable reading and writing regular expressions will benefit you.

They are a declarative way of specifying the desired structure of a piece of text. A regular expression can be used to extract information from a larger text, and to validate smaller pieces of text.

In this lab, you will use the Python programming language to learn the basics of how to use a regular expression and you'll learn about the different character classes available for matching different types of characters.

Learning Objectives

Upon completion of this beginner level lab, you will be able to:

  • Implement a regular expression using Python
  • Use different character classes to match subsets of a piece of text

Intended Audience

  • Developers
  • Engineers


Familiarity with the Python programming language will be beneficial but is not required.

The following course can be used to fulfill the prerequisite:


January 13th, 2020 - Clarified the validation check is testing that there are no vowels or spaces in the matches 

About the Author
Learning paths2

Andrew is a Labs Developer with previous experience in the Internet Service Provider, Audio Streaming, and CryptoCurrency industries. He has also been a DevOps Engineer and enjoys working with CI/CD and Kubernetes.

He holds the Developer - Associate, Sysops Administrator - Associate, and Solutions Architect – Associate AWS certifications.

Covered Topics