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Python Object-Oriented Python Instant Objects Master Class

Posted by Ayanda Sithole
Ayanda Sithole
1,954 Points

OK, now let's add a method named run_lap. It'll take a length argument. It should reduce the fuel_remaining att

I don't know what it is I'm not doing correctly, please 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, **kwargs):
        self.fuel_remaining = fuel_remaining - (length*0.125)
        laps += 1
Chris Couch
.a{fill-rule:evenodd;}techdegree seal-36
Chris Couch
Front End Web Development Techdegree Graduate 25,326 Points

I think the only issue is with your 'run_lap' function. Try removing **kwargs and fuel_remaining and see if that helps. Code provided:

 def run_lap(self, length):
        self.fuel_remaining -= (length * .125)
        self.laps += 1

1 Answer

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

You're close, but:

  • in "run_lap", you need to add the "self." prefix to the second reference to "fuel_remaining"
  • you need to add the "self." prefix to the reference to "laps" on the last line
  • It doesn't affect passing, but "run_lap" does not need a "**kwargs" parameter