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

Posted by Sudhir Raghur Venkatesalu
Sudhir Raghur Venkatesalu
7,347 Points

I do get the answer when i try it in terminal. but here it throws error.Need help to fix the issue.

class RaceCar: def init(self,color,fuel_remaining,laps,**kwargs): self.color = color self.fuel_remaining = fuel_remaining self.laps = laps for att,value in kwargs.items(): setattr(self,att,value)

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

p1 = RaceCar('Red',30,0,a='b',b='c')

print(p1.color)

print(p1.run_lap(10)) print(p1.run_lap(20)) print(p1.run_lap(30))

racecar.py 
class RaceCar:
    def __init__(self,color,fuel_remaining,laps,**kwargs):
        self.color = color
        self.fuel_remaining = fuel_remaining
        self.laps = laps
        for att,value in kwargs.items():
            setattr(self,att,value)

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


p1 = RaceCar('Red',30,0,a='b',b='c')

print(p1.color)

print(p1.run_lap(10))
print(p1.run_lap(20))
print(p1.run_lap(30))

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,468 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,468 Points

You are very close. Two issues:

  • The default value of laps should be 0 in __init__ parameter list
  • The method run_lap does not need a return statement. The self.fuel_remaining should be modified in-place by subtracting (length * 0.125).

Post back if you need more help. Good luck.

Sudhir Raghur Venkatesalu
Sudhir Raghur Venkatesalu
7,347 Points

Thanks it worked :-)