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

Posted by Mohamed El-Damarawy
Mohamed El-Damarawy
11,294 Points

I'm really confused of why isn't my code working

racecar.py 
class RaceCar:

    laps = 0

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

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

1 Answer

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

When referencing class variables, you need to prefix the name with "self.".

You did this correctly with "fuel_remaining", but you need to treat "laps" the same way.

Mohamed El-Damarawy
Mohamed El-Damarawy
11,294 Points

Thanks Steve, it drove me crazy to figure it out without a proper exception name or error to describe the issue