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 Object-Oriented Python Advanced Objects Dream Vacation

Positional arguments and classmethod

Task: Below is a class called DreamVacation that holds a location and list of activities. Create a @classmethod called rome that will return a new DreamVacation instance with cls() with the following arguments: location = 'Rome' and activities list = ['visit the Colosseum', 'Eat gelato'].

Hint: The classmethod should take cls instead of self as an argument.

Question: I get the error that I'm missing two positional arguments, but as far as I know, I did provide them.

dream_vacation.py
class DreamVacation:
    def __init__(self, location, activities):
        self.location = location
        self.activities = activities
    # insert your code here

    @classmethod
    def rome(cls):
        vacation = cls().__init__(location = 'Rome', activities = ['visit the Colosseum', 'Eat gelato'])
        return vacation

1 Answer

Steven Parker
Steven Parker
221,309 Points

The constructor is called automatically when you create an instance:

        vacation = cls(location = 'Rome', activities = ['visit the Colosseum', 'Eat gelato'])
# or just:
        vacation = cls('Rome', ['visit the Colosseum', 'Eat gelato'])