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Python Basic Object-Oriented Python Welcome to OOP Adding to our Panda

Posted by Aaron Lane
Aaron Lane
1,400 Points

My brain has decided it isn't jumping anymore walls. What have I done wrong?? Thank you.

Create a method called eat. It should only take self as an argument. Inside of the method, set the is_hungry attribute to False, since the Panda will no longer be hungry when it eats. Also, return a string that says 'Bao Bao eats bamboo.' where 'Bao Bao' is the name attribute and 'bamboo' is the food attribute.

panda.py 
class Panda:
    species = 'Ailuropoda melanoleuca'
    food = 'bamboo'
    name = 'Bao Bao'

    def __init__(self, name, age):
        self.is_hungry = True
        self.name = name
        self.age = age

    def __eat__(self):
        self.is_hungry = False
        if self.is_hungry 
            return(f'{name} eats {bamboo}')

1 Answer

AJ Tran
STAFF
AJ Tran
Treehouse Teacher
AJ Tran
AJ Tran
Treehouse Teacher

Hi Aaron, there's just a few adjustments needed :)

First I will show you my results of running your code

>>> class Panda:
...     species = 'Ailuropoda melanoleuca'
...     food = 'bamboo'
...     name = 'Bao Bao'
...     def __init__(self, name, age):
...         self.is_hungry = True
...         self.name = name
...         self.age = age
...     def __eat__(self):
...         self.is_hungry = False
...         if self.is_hungry
  File "<stdin>", line 11
    if self.is_hungry
                    ^
SyntaxError: invalid syntax

SyntaxError usually means there is some punctuation missing.

Remember that "if statements" need to end in a colon!

if self.is_hungry:

Let's try it again:

>>> class Panda:
...     species = 'Ailuropoda melanoleuca'
...     food = 'bamboo'
...     name = 'Bao Bao'
...     def __init__(self, name, age):
...         self.is_hungry = True
...         self.name = name
...         self.age = age
...     def __eat__(self):
...         self.is_hungry = False
...         if self.is_hungry
...             return(f'{name} eats {bamboo}')
... 
>>> p = Panda('Mimi', 2)
>>> p.is_hungry
True
>>> p.eat()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'Panda' object has no attribute 'eat'

This time, the class definition is syntactically correct. We can instantiate a new Panda instance p, and check if p is hungry.... but p cannot eat!

Let's break down the Traceback and it's error.

>>> p.eat()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'Panda' object has no attribute 'eat'

AttributeError says that eat does not exist! But we have a definition for it....

def __eat__(self):

So there must be something in this line that needs to be fixed.

I'll leave you here on a new starting point to investigate :) If you need more help, we will be around for you!