Spyder

Hey, Ray! Wanna do some coding?

Ray

Who, me?

The others are better at this.

Maybe, maybe not. Watching you work will help the people reading this learn from you.

Why is repeating code a problem?

Define functions before you use them

Ray

I tried this, and got the error NameError: name 'rect_area' is not defined.

Reminder

A while loop has the form:

condition is either true or false, just like an if uses. Python will keep doing action while condition is true.

We saw loops using string variables in the condition:

Practice string and numeric patterns.

Test user input to make sure it's valid.

Let's make a simple calculator to work out restaurant tips.

Ivana's Boston

Get yourself some Spyder

Spyder is the programming tool we'll use. It has everything you need in one download. Runs on Windows, Mac, and Linux. It's free. Free is good.

Please use Spyder 6 or later.