Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python Flask Basics Character Builder Items

Chris Grazioli
Chris Grazioli
31,225 Points

I don't understand the "category" choices in options.items()? I'm sure we went over this way back when

options is a dict called DEFAULTS what is .items() doing ? where did category come from, was this just arbitrary

1 Answer

for category, choices in options.items()

This is using tuple assignment. dict.items() returns an iterable of tuples to loop over comprised of (key, value) pairs. The dual assignment allows you to retrieve the key and the value to use in the loop.

Chris Grazioli
Chris Grazioli
31,225 Points

So essentially its going to take DEFAULTS as it was loaded into the view as options

options.items() gives us an iterable of tuples that gets assigned (category, choice) for (key, value)???

That is correct.