Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Basic Object-Oriented Python Creating a Memory Game Game Class Part 1

Natalie Heyde
Natalie Heyde
1,736 Points
Posted by Natalie Heyde
Natalie Heyde
1,736 Points

Why are the sets in parens and not curly brackets?

Hi, I'm wondering why Megan explained that sets are in curly brackets but then used parentheses when doing this:

available_locations = set(self.locations) - set(used_locations)

Unless in this case, set is some sort of Python method, as in set() - set()?

2 Answers

jb30
jb30
44,805 Points

set() is a python method. set(self.locations) converts the list self.locations to a set.