Lesson 9 of 20 · Design Process

Design Process — Part 9

Define, prototype, test, iterate.

What you'll learn

You will learn the design process: plan it, build a simple version, test it, then improve.

Words to know

Design: Planning what the program should do before writing code.
Simple version: A first version that does the main thing correctly. Improve it later.
Improve: Making the program better after the first version works.

Your turn

📋 Show the steps

Try it: run the code, then change it

1Good design starts with a plan. The problem here is simple: show a personalized greeting. The solution: store a name, then print it.
2This is a 'simple version' — it works! It solves the problem in the fewest lines possible.
3Once the simple version works, you can improve it: add more messages, ask for the user's name, add colors.
4Real programmers always start simple, test it, then improve. Never try to build everything at once!

Auto-run is on: change the code and the result updates by itself.

Auto-run

Output

Loading Python... This may take a few seconds.

Check your understanding · 1 of 3

What is a 'simple version' of a program?

Check your understanding · 2 of 3

After your first version works, you should:

Check your understanding · 3 of 3

What is the first step when designing a program?

Nice work!

You got 0 of 3 right.