A Pythonic Adventure

2 Lists: What’s on the menu?

In this chapter

• Erik starts using menus in his coffee shop
• Erik uses Python lists for his drinks, flavors, and toppings
• Erik uses for loops to print out his lists
• Simon explains how computers store numbers and strings
• Erik learns an important thing about list indices

The next day, Erik was ready to continue working on his Coffee Shop application. He remembered that Simon said something about missing products that customers might enter in the dialogue. He came to his brother and asked, “You said yesterday that customers can enter something that I don’t have in the shop. What should I do about it?”

“Remember the last time you were in a coffee shop or restaurant. How did you know what you could order?”

“They had a ...