Python "while" Loops (Indefinite Iteration)

Mastering While Loops

Katy Gibson
Katy Gibson 11 Lessons 26m basics python
Start Now Rate and Review

Master indefinite iteration using the Python “while” loop. You’ll be able to construct basic and complex while loops, interrupt loop execution with break and continue, use the else clause with a while loop, and deal with infinite loops.

The editor used in this course is Thonny: The Beginner-Friendly Python Editor. Check out our article about Thonny. It covers the setup and usage as well as best practises.

What’s Included:

Related Learning Paths:

Start Now

While Loops

11 Lessons 26m

  1. 1. Intro to While Loops in Python01:11
  2. 2. Basic While Loop Structure03:07
  3. 3. While Loops and Lists02:59
  4. 4. Interrupting Loop Iteration00:53
  5. 5. Using Break and Continue04:08
  6. 6. The While Loop Else Clause01:50
  7. 7. Infinite Loops02:16
  8. 8. Breaking Out of an Infinite While Loop02:53
  9. 9. Nested While Loops04:22
  10. 10. One-Line While Loops02:17
  11. 11. While Loops: Conclusion & Lessons Learned00:31
Start Now

About Katy Gibson

Katy is a full-stack web developer with experience in high school science education. She enjoys teaching and learning and is just really excited to be here.

» More about Katy

Each tutorial at Real Python is created by a team of developers so that it meets our high quality standards. The team members who worked on this tutorial are:

Florian

Sadie

Tappan

John

Kyle

Joanna

Aldren

Participant Comments

Avatar image for Abdullah Dev

Abdullah Dev on Feb. 27, 2020

Great work! Well done! This is so easy to follow and easy to understand! Amazing!!!

Avatar image for Sachin

Sachin on Dec. 26, 2019

Thanks for the great tutorial. I can now use while loops to their full potential

Avatar image for Jean Ferreira

Jean Ferreira on Sept. 4, 2019

Well done Katy. You made it very easy to understand and also you used a great tool to help us see step-by-step how everything works. Looking forward for more videos from you.

Avatar image for kcalhoun98

kcalhoun98 on May 21, 2019

This un-confused me about the order of operations in a nested while loop. Thank you!!

Avatar image for sion

sion on May 13, 2019

Very good tutorial. It took me to places that I’ve not been before. Thank you.

Avatar image for estis

estis on April 24, 2019

The tutorial was very good!

Avatar image for ChrisF

ChrisF on March 16, 2019

Great set of tutorials - Loved them!

Avatar image for Bill

Bill on March 13, 2019

Katy, Really well done, made while loops readily understandable. Thank you.

I changed the fizz, baz, buzz to one, two, three, just so I could more readily identify where I was and what was going on. Probably more of my dyslexia than anything else.

« Browse All Courses