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 (retired) Inheritance Override Inherited Methods

Posted by Carina De Jager
Carina De Jager
1,779 Points

Won't change to uppercase

Hey guys. Posted this same question in the early afternoon yesterday and never got an answer... Any insights as to why my Grrr!!! isn't coming back in uppercase?

sheep.py 
from animal import Animal

class Sheep(Animal):
  pass
  sound = 'Grrr!!!'

  def __str__(self):
    self.sheep.noise = self.sound.upper()

2 Answers

Chase Marchione
Chase Marchione
155,055 Points
Chase Marchione
Chase Marchione
155,055 Points

Hi Carina,

Instead of a str method, let's create a method named noise, and have it return the uppercase value of the instance's sound. That way, noise will be set to that value (the uppercase value of self.sound.)

from animal import Animal

class Sheep(Animal):
  pass
  sound = 'Grrr!!!'

  def noise(self):
    return self.sound.upper()

Hope this helps!

Carina De Jager
Carina De Jager
1,779 Points
Carina De Jager
Carina De Jager
1,779 Points

YES!!! Thank you! Was starting to go a bit bonkers. Haha