Focus Checkpoint

Dave is about to explain how to use functions (note that he calls them "procedures") in Python.

This stuff is hard. It takes time and practice to really understand:

• what a function is
• how to make a function
• how to use a function
• when you should write a function
• why functions are so valuable.

So don't worry if you feel confused at first. That's normal. Stick with it and don't expect complete mastery yet!

Where to Focus

Try to avoid becoming overwhelmed by first focusing on only a few of the ideas presented in the next video. It's such an important video that I will ask you to watch it again afterwards.

This time, just focus on the following question:

How do functions take input and produce output and what role do the keywords def and return have to do with this process?