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empty-method-without-abstract-decorator (B027)#

Derived from the flake8-bugbear linter.

What it does#

Checks for empty methods in abstract base classes without an abstract decorator.

Why is this bad?#

Empty methods in abstract base classes without an abstract decorator may be be indicative of a mistake. If the method is meant to be abstract, add an @abstractmethod decorator to the method.

Example#

from abc import ABC


class Foo(ABC):
    def method(self): ...

Use instead:

from abc import ABC, abstractmethod


class Foo(ABC):
    @abstractmethod
    def method(self): ...

References#