I added a return type hint and a stub return value to the Python initial code

The error I got had the message that I shared. :s

I get 'Unspecified assertion error'.
Is that the one?

Please, don't be an idiot like me, and note that in Python it expects the kata to return a set, not an array.

If you get:

['1-800-CODE-WAR', '1-800-CODE-WAS', '1-800-CODE-YAP', '1-800-CODE-ZAP'] should equal {'1-800-CODE-YAP', '1-800-CODE-ZAP', '1-800-CODE-WAS', '1-800-CODE-WAR'}

That's the error.