CODEWITHSUNDEEP
pythonstatic-methods
gitaarik
gitaarik

Reputation: 46430

Get the calling class in a static method in Python

If you have a setup like this:

class Animal(object):

    @staticmethod
    def create():
        return Animal()

class Frog(Animal):
    pass

You can create animals like Animal.create() but if you do Frog.create() you also get an Animal and not a Frog. Is there a way to change the create() method to make it create an instance of the class it's being called from?

Upvotes: 0

Views: 149

Answers (1)

user4815162342
user4815162342

Reputation: 155670

This is a typical use case for classmethod:

class Animal(object):

    @classmethod
    def create(cls):
        return cls()

class Frog(Animal):
    pass

>>> Animal.create()
<Animal object at 0x51fc190>
>>> Frog.create()
<Frog object at 0x51fc610>

Upvotes: 3

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