abstractmethod is not defined
You only imported ABCMeta
from abc import ABCMetaAlso import abstractmethod
from abc import ABCMeta, abstractmethodand everything should be fine.
You need to import abstractmethod from abc. abc is the inbuilt Python package for Abstract Base Classes.
An example:
from abc import abstractmethodclass Foo: def __init(): pass @abstractmethod def bar(): pass
You need to change import ABC to ABCMeta
from abc import ABCMeta, abstractmethodclass AbstractClassExample(ABCMeta): def __init__(self, value): self.value = value super().__init__() @abstractmethod def do_something(self): print("do_something")class DoAdd42(AbstractClassExample): print("DoAdd42")x = DoAdd42(4)