Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Object-Oriented Python Instant Objects Master Class

youssef b10ta
PLUS
youssef b10ta
Courses Plus Student 2,755 Points
Posted by youssef b10ta
youssef b10ta
Courses Plus Student 2,755 Points

dont know whats wrong with this code : It should reduce the fuel remaining by length multiplied by 0.125.

dont actully understand the question i guess :)

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):
                fuel_remaining = ( fuel_remaining - lenght) * 0.125
                laps += 1

3 Answers

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

Here's a few hints:

  • you want to reduce the fuel by the multiplied value
  • you spelled "lenght" instead of "length"
  • be careful to be consistent with indentation
youssef b10ta
youssef b10ta
Courses Plus Student 2,755 Points
youssef b10ta
youssef b10ta
Courses Plus Student 2,755 Points

u mean like this you want to reduce the fuel by the multiplied value

fuel_remaining = fuel_remaining - ( length * 0.125 )

Steven Parker

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

Good, but also don't forget the "self." prefix for instance variables.

youssef b10ta
PLUS
youssef b10ta
Courses Plus Student 2,755 Points
youssef b10ta
youssef b10ta
Courses Plus Student 2,755 Points 
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):
        fuel_remaining = fuel_remaining - ( length * 0.125 )
        laps += 1

this is my final code i did try to add the prefix to the attributes length still the same kinda sucks : no idea

Steven Parker

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

You do need those prefixes, and that's all you need yet for this code to pass the challenge.