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Python Object-Oriented Python Instant Objects Master Class

Alex Seri
Alex Seri
3,007 Points
Posted by Alex Seri
Alex Seri
3,007 Points

unable to complete the challenge. Error is not descriptive.

No idea what is wrong with my run_lap function. Could use some help, please.

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

1 Answer

Ave Nurme
Ave Nurme
20,907 Points

Hi Alex

I spotted a few things in your code:

  • I think there's no need to put laps here -> def __init__(self, color, fuel_remaining, laps, **kwargs):
  • self.laps should be set 0 (zero)
  • I think this is unnecessary though I guess it can be there self.length = length since we use 'length' only in the 'run_lap'-method
  • missing 'self' here for 'fuel_remaining' since we need to access it from the init -method -> fuel_remaining -= (length * 0.125)
  • also missing 'self' here for 'laps+=1'

This should pass:

class RaceCar:
    #laps = 0

    def __init__(self, color, fuel_remaining, **kwargs):
        self.color = color
        self.fuel_remaining = fuel_remaining
        self.laps = 0
        for key, value in kwargs.items():
            setattr(self, key, value)

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

Hope this helps!