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 Object-Oriented Python Instant Objects Master Class

I want to know what's wrong with my code

class RaceCar:
    laps = 0
    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):
            self.fuel_remaining = self.fuel_remaining - (0.125*self.length)
            laps += 1

1 Answer

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 28,720 Points

Looks like you have a pretty good start on this... let's build on that.

1 - issues with indentation need to be addressed the run_lap() method needs to be outdented by 4

2 -The laps variable needs to referenced to the self object

class RaceCar:
    laps = 0
    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):
        self.fuel_remaining = self.fuel_remaining - (0.125*self.length)
        self.laps += 1 # fix here

Also note, on part 3 of the challenge, they will ask you to change the laps from a class variable to an instance variable. I will leave that to you to figure out.

Best of luck with Python!