doc/data/messages/a/abstract-method/bad.py


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class Pet:
    def make_sound(self):
        raise NotImplementedError


class Cat(Pet):  # [abstract-method]
    pass


import abc


class WildAnimal:
    @abc.abstractmethod
    def make_sound(self):
        pass


class Panther(WildAnimal):  # [abstract-method]
    pass