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

victor E
victor E
19,145 Points
Posted by victor E
victor E
19,145 Points

creating a method

my method is missing something

racecar.py 
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):
        laps += 1 
        fuel_remaining - (int(length) * 0.125)

1 Answer

Maxwell Newberry
Maxwell Newberry
7,693 Points
Maxwell Newberry
Maxwell Newberry
7,693 Points

I am going to assume this is for task 2. In your run_lap() method, on the second line, you added the subtraction operator but forgot to make it equal to that using -=. Next, we're effecting variable values within our class so we use self to referencing those variables.

    def run_lap(self, length):
        self.laps += 1 
        self.fuel_remaining -= length * 0.125
victor E
victor E
19,145 Points
victor E
victor E
19,145 Points

that makes sense

thank you!!