Start Here
Learn Python
Python Tutorials →
In-depth articles and video courses Learning Paths →
Guided study plans for accelerated learning Quizzes & Exercises →
Check your learning progress Browse Topics →
Focus on a specific area or skill level Community Chat →
Learn with other Pythonistas Office Hours →
Live Q&A calls with Python experts Podcast →
Hear what’s new in the world of Python Books →
Round out your knowledge and learn offline Reference →
Concise definitions for common Python terms Code Mentor →Beta
Personalized code assistance & learning tools Unlock All Content →
More
Learner Stories Python Newsletter Python Job Board Meet the Team Become a Contributor

Search

/

Join
Sign‑In

Loading exercise...

Exercise: Find Words Starting With a Prefix Using Regex

Martin Breuss

Check if a Python String Contains a Substring Martin Breuss 08:00

Recommended Tutorial Course Slides (PDF) Sample Code (ZIP) Ask a Question

Discussion

Become a Member to join the conversation.

Course Contents

Overview

60%

Confirm That a Python String Contains Another String

Check if a Python String Contains a Substring (Overview) 02:00

Confirm the Presence of a Substring 04:31

Generalize Your Substring Check 04:10

Exercise: Check for a Case-Insensitive Substring 08:00

Find Out More About the Substring

Learn More Using String Methods 01:49

Use .count() to Get the Number of Occurrences 02:30

Use .index() to Get the Location of the Substring 02:35

Avoid Using .find() to Check for Substrings 05:20

Exercise: Count and Locate a Substring 08:00

Find a Substring With Conditions Using Regex

Get to Know Regex for Finding Substrings 01:32

Match a Substring Using re.search() 03:51

Explore a Match Object 03:25

Find All Pattern Matches 03:28

Get All Matches as Match Objects 03:26

Wrap Up Finding Substrings With Regex 01:51

Exercise: Find Words Starting With a Prefix Using Regex 08:00

Find a Substring in a pandas DataFrame Column

Set Up and Inspect the Data 02:10

Filter DataFrame Rows With .str.contains() 02:03

Use Regular Expressions With pandas 02:23

Review What You've Learned

Check if a Python String Contains a Substring (Quiz) 11:00

Check if a Python String Contains a Substring (Summary) 02:22

© 2012–2026 Real Python ⋅ Privacy Policy