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.

akshat kumar
865 PointsI don't know why i am getting a error
I did everything according to rules
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 = (self.fuel_remaining*0.125) - self.length
self.laps = self.laps + 1
1 Answer

Steven Parker
216,164 PointsYou're getting close, but there's two issues:
The "length" is a method parameter and not an instance attribute. So you shouldn't use a "self.
" prefix on it.
Also, the instructions say to "reduce the fuel_remaining
attribute by length
multiplied by 0.125". But the code here is multiplying the fuel_remaining
instead.