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 Alice Giandjian
Alice Giandjian
3,636 Points

Race Car Class Task 2

I don't understand why it is not working? I tried several times to change stuff around

racecar.py 
class RaceCar:

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

        for key, value in kwargs.items():
            setattr(self, key, value)

    def run_lap(length):
        fuel_remaining = (fuel_remaining - length) * 0.125
        laps++

1 Answer

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

You're getting close, but:

  • the first parameter of a method should be "self"
  • the length should be multipled by 0.125 first, and then subtracted from the fuel
  • references to instance attributes should be preceded by "self."
  • Python has no "++" operator, you can increment using "+= 1"