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Python Object-Oriented Python Instant Objects Master Class

Posted by newpal
newpal
1,717 Points

What is wrong with my code please?

OK, now let's add a method named run_lap. It'll take a length argument. It should reduce the fuel_remaining attribute by length multiplied by 0.125.

Oh, and add a laps attribute to the class, set to 0, and increment it each time the run_lap method is called.

racecar.py 
class RaceCar:
    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(len(arg)):
        self.fuel_remaining = self.fuel_remaining - (len(arg) * 0.125)
        self.laps = 0
        self.laps += 1

1 Answer

cb123
cb123
Courses Plus Student 9,858 Points
  1. where you have self.laps=0 will reset laps to zero every time run_lap method is called. you should place where initialize so it only resets when the instance is created.
  2. Challenge asks for length attribute. Your use of len returns the number of items in a container and that is not a requirement
  3. hint. as there is an += there is also a -= to use to simplify your fuel remaining calculation.
  4. run_lap needs to have an argument of self to make use of the other items within the base class.
  5. run_lap needs an argument of length as that will be required to pass through to your formula when someone calls the method.
newpal
newpal
1,717 Points

Thank you!