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

Ali Dahud
Ali Dahud
3,459 Points
Posted by Ali Dahud
Ali Dahud
3,459 Points

why doesnt this work?

I don't get it maybe because the order? can anyone explain?

racecar.py 
class RaceCar:




    def __init__(self,laps=0,color,fuel_remaining,**kwargs):
        self.color=color
        self.fuel_remaining=fuel_remaining
        self.laps=laps

        for attr, values in kwargs.items():
            setattr(self,attr,values)

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

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The challenge is expecting the first argument to be "color" but it has been changed here to "laps".

In fact, "laps" doesn't need to be an argument at all, it can always be initialzed to 0.

Ali Dahud
Ali Dahud
3,459 Points
Ali Dahud
Ali Dahud
3,459 Points

But the challenge asked me to put it as an argument :)

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The instructions for task 1 specifically say, "In the __init__ for the class, take arguments for color and fuel_remaining. ".

Then for task 2, they say, "...and add a laps attribute to the class..." The only new argument mentioned is the length argument for the new method run_lap.