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 Instant Objects Master Class

How do I pass the instant objects quiz?

racecar.py
class RaceCar:

    def __init__(self, color, fuel_remaining, **kwargs):
        self.color = color
        self.fuel_remaining = fuel_remaining
        self.lap = 0
        for k,v in kwargs.items():
            setattr(self, k, v)

     def run_lap(self, length):
        self.fuel_remaining = self.length  * 0.125
        self.lap += 1
Adam Sheaffer
Adam Sheaffer
9,745 Points

Looks like you're setting self.fuel_remaining instead of decrementing it

self.fuel_remaining = self.fuel_remaining - (length * 0.125) did not work.

1 Answer

Adam Sheaffer
Adam Sheaffer
9,745 Points

self.fuel_remaining = self.fuel_remaining - (length * 0.125) did not work.

That part looks correct. The reason it may still be failing is because it's looking for a laps prop on self, but you have lap