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Python Object-Oriented Python Instant Objects Master Class

jessechapman
jessechapman
4,088 Points
Posted by jessechapman
jessechapman
4,088 Points

run_lap method in Object-Oriented Coding challenge

The def init method words fine, but I have hit a wall with the run_lap method portion this challenge. The challenge specifies that length should be passed as an argument to the method, that it should reduce fuel_remaining by .125 times the length, and that it should increase the laps by one. I have tried including all of these as parameters for the run_laps method, as well as returning the values using a tuple. Unfortunately, after many variations, I can't see to identify the problem. In every case, the error message is only "Bummer: Try again!"

racecar.py 
class RaceCar:
    def __init__(self, color, fuel_remaining, laps, **kwargs):
        self.color = color
        self.fuel_remaining = fuel_remaining
        self.laps = 0
        for k, v in kwargs.items():
            setattr(self, k, v)

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

1 Answer

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

It looks like you added a "laps" argument to __init__ after passing task 1, but it should not be changed in task 2.

Also, the "run_lap" method is only intended to take a length argument. It won't take "fuel_remaining" or "laps" as arguments. Those are internal variables that you already have correctly referenced using the "self." prefix.