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

Posted by Duane Smith
Duane Smith
1,919 Points

Not sure how to "Call a Method" inside another method within a class

I'm trying to follow this third part and it seemed straight forward enough, but I'm honestly lost. They want us to check if "is_hungry" is true. If it is, call the method (eat(self)) inside the check_if_hungry(self) method. I don't get how i'm supposed to do that.

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

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

    def eat(self):
        self.is_hungry = False
        return "{name} eats {food}.".format(name = self.name, food = self.food)

    def check_if_hungry(self):
        if self.is_hungry == True:
            self.eat(self)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

Hey Duane Smith, any instance attribute (names with that namespace) may be referenced using self. This is valid for method references.

Using the self. prefix says look for this reference in the current instance’s namespace.

To see what’s in a namespace use dir(). From within you can use dir(self). From outside use dir(instance_name).

Note: when calling an instance method, do not include the “self” parameter. So, use self.eat()

Post back if you need more help. Good luck!!!

Duane Smith
Duane Smith
1,919 Points

Thanks Chris Freeman for the feedback!