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Python Object-Oriented Python Instant Objects Master Class

Masterclass racecar

I don't understand why my code is not working. It just says me Bummer! Try again! I tried to move laps=0 outside of the methods, but that didn't help.

racecar.py
class RaceCar:

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

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

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

1 Answer

Chris Howell
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Chris Howell
Python Web Development Techdegree Graduate 49,702 Points

Hi Stefano Nebiolo

It looks like you are trying to use self.length , you want to use the length that was passed into the function. Using self.length means you are trying to use an instance variable. You just want to use the value that was passed into the run_lap function.

Let me know if that HINT helps. ;)