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!

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 Object-Oriented Python Instant Objects Master Class

How would I get the laps argument to increment every time i run the method?

The error keeps telling me to make sure that the laps argument is set to 0.

class RaceCar:
    def __init__(self, color, fuel_remaining, **kwargs):
        self.color = color
        self.fuel_remaining = fuel_remaining
        for key, value in kwargs.items():
            setattr(self, key, value)

    def run_lap(self, length):
        laps = 0
        (self.fuel_remaining - length) * 0.125
        laps += 1

1 Answer

Steven Parker
Steven Parker
227,114 Points

Remember that instance variables must be prefixed by "self." and they should be initialized only once in the "__init__" methods.