Return a value, save a file, and build something you can explain.

Who this level is for

Teens who already loop, use lists, and can read a short function. When this level is done, the main Python track is next.

Ages 14–16. That is a guide, not a gate. If this feels slow, go to the Python tutorial. If they feel hard, stay here and run each sample in thePython editor.

What you will do

• Return values from functions
• Read and write a simple file
• Group data in a class
• Think in steps (algorithms)
• Ship a to-do list and a scored quiz, then join the main tutorial

Start with Functions that Return, then follow Next at the bottom of each page.

Real life — learn it faster

Each chapter ties the idea to something you already do: a backpack, a snack stall, a rainy window. Read the scene, run the code, then the syntax sticks.

• Functions that ReturnA shop calculator: you want the number back, not just to see it.
• ModulesUsing a real calculator and a wall clock instead of inventing them.
• A First ClassTwo players on the same football pitch, each with their own score.

Try this now

Copy into Try Python. Change the words. Run it.

def score(points):
    return sum(points)

print("Total:", score([10, 20, 5]))

Chapter list

Twelve chapters. Then join the main Python tutorial.

1. ↩️ Functions that Returnreturn sends a value back. Call the function. Use the result.return · def · Use
2. 📦 Modulesimport a library. math, random, and datetime do work you should not rewrite.import · math · datetime
3. 🧱 A First ClassA class groups data and actions. Make a Player with a name and a score.class · self · Object
4. 📊 Data TablesA list of dictionaries is a tiny table. Loop, filter, and print a report.dicts · Lists · Report
5. 📑 Files and CSVRead rows from a CSV-style file. Total a column. Print a clean summary.CSV · Files · Totals
6. 🌐 Build a PageHeadings, a list, and a link in the HTML editor. A page you can show someone.HTML · Layout · Links
7. 🧠 Think in StepsAn algorithm is a plan. Search a list. Sort a few numbers. Count how many steps.Search · Sort · Plan
8. ✨ Clean CodeNames that mean something. Short functions. Comments only when the code cannot say it.Names · Functions · Comments
9. ☑️ Project: To-DoAdd, list, and remove tasks. A list in memory, then save it to a file.Lists · Menu · Project
10. 🏅 Project: Scored QuizQuestions in a list of dicts. Track score. Print a result you can explain.dicts · Score · Project
11. 🚪 What's NextYou can read Python. The main tutorial, HTML, and Try Python are the next rooms.Path · Tutorial · HTML
12. ➡️ Join the Main TrackOpen Python Intro, then Get Started. Skip what you already know. Keep Next.Python · Intro · Next

After this level

Next is the Python tutorial — start atIntro and skip what you already know. HTML lives in the HTML studio if you want a page, not a printout.

Back to Kids home if you want to switch levels.