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 Kathleen Wang
Kathleen Wang
2,840 Points

Not sure what is wrong with my code

OK, now let's handle the racecar running laps. Add a laps attribute to the RaceCar class and set it to 0. Add a method named run_lap. It'll take a length argument. It should reduce the fuel_remaining attribute by the length argument multiplied by 0.125 (length * 0.125). Also, increment the laps attribute by 1 each time the run_lap method is called.

Thank you

racecar.py 
class RaceCar: 
    def __init__(self,color,laps = 0,fuel_remaining,**kwargs):
        self.color = color
        self.laps = laps
        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 - (length * 0.125)
        self.laps = self.laps + 1

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

You are SO close! In the __init__ method definition the parameters with default values must come after regular parameters. So moving laps=0 after fuel_remaining will fix the code.

Post back if you need more help. Good luck!!!

Kathleen Wang
Kathleen Wang
2,840 Points

thank you!! working now