Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python Object-Oriented Python Instant Objects Master Class

Help with exercise (Python - Classes)

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)

laps = 0        


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

after the laps argument, my code seems to be wrong, can someone tell me what is the error, please?

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)

    laps = 0        


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

I improved the code, but still am. not able to pass the test:

class RaceCar:

def __init__(self, color, fuel_remaining, laps = 0, **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(length):
    self.length =. length
    return self.fuel_remaining - (self.length * 0.125)
    return laps + 1

1 Answer

imo
imo
7,898 Points
def run_lap(length): #<-- you are forgeting the self infront of length
    self.length =. length #<-- length does not need a self. because it is a local variable
    return self.fuel_remaining - (self.length * 0.125) #<-- it does not need to be returned, it only need to be updated
    return laps + 1 #<-- same here it just needs to be updated
    #Also you can't have 2 returns back to back. Once it reaches to the first return it will return that thing and will break out of the method.

# Check this method, this is the correct way of doing it
def run_lap(self, length):
        self.fuel_remaining -= length * 0.125
        self.laps += 1