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 Advanced Objects Dream Car

Posted by Max Palmer
Max Palmer
2,920 Points

AttributeError: 'builtin_function_or_method' object has no attribute 'lower'

What is this error? I have no idea why the question would need .lower as method. Yet am continualy getting it.

dream_car.py 
class DreamCar:
    def __init__(self, make, model):
        self.make = make
        self.model = model
    # insert your code here
    def __str__(self):
        return "My dream car is a {} {}.".format
        (self.__class__.__make__, self.__class__.__model__, self.name)

1 Answer

Steven Parker
Steven Parker
229,657 Points
Steven Parker
Steven Parker
229,657 Points

The message is a bit confusing, but the code has these issues:

  • the attribute names don't have underscores in them
  • the word "__class__" isn't needed to access the attributes
  • there's no third attribute called "name"
        return "My dream car is a {} {}.".format(self.make, self.model)
Max Palmer
Max Palmer
2,920 Points

Thanks!