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Python Object-Oriented Python Instant Objects Master Class

Stacey Normington
Stacey Normington
4,892 Points

master class q2

I don't know where I'm going wrong with this it's not giving me any errors other than try again

racecar.py
class RaceCar:
    laps = 0

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

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 67,665 Points

Hey Stacey Normington, you’re really close!

Inside the run_lap method, “fuel_remaining” and “laps” are not defined.

:point_right: be sure to use the prefix self. to reference attributes. method: self.fuel_remaining and self.laps

Post back if you need more help. Good luck!!!

Stacey Normington
Stacey Normington
4,892 Points

I defined laps and fuel remaining inside run_lap, where else should I add self its still coming up with try again

Chris Freeman
Chris Freeman
Treehouse Moderator 67,665 Points

In run_lap method, all variable names except length should have self. prefix. I see two places this needs to be fixed.

Chris Freeman
Chris Freeman
Treehouse Moderator 67,665 Points
def run_lap(self, length):
        self.fuel_remaining = fuel_remaining - (length * 0.125)
        #       not defined  ^^^^^^^^^^^^^^
        self.laps = laps + 1
        #          ^^^^ not defined