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Python Object-Oriented Python Instant Objects Master Class

Posted by Alex John
Alex John
206 Points

help help

dont get the question

racecar.py 
class RaceCar():
    laps = 0
    def __init__(self, color, fuel_remaining,laps, **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):
        length - fuel_remaining * 0.125
        laps += 1

1 Answer

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

It looks like you're on task 2. The instructions say "add a laps attribute to the class", but they don't say it should be an argument to the __init__ method. The validation mechanism is not expecting to need an extra argument to create an instance.

Then, for the "run_lap" method they say it "should reduce the fuel_remaining attribute by length multiplied by 0.125". But the code "length - fuel_remaining * 0.125" has these issues:

  • the class variable is missing the "self." prefix
  • the fuel is being multiplied by the constant instead of the length
  • the length is being reduced instead of the fuel
  • the final calculation result isn't being stored anywhere

And the first hint (about "self.") applies to the "laps" calculation as well.