Abstract Methods

• Always use the @abstractmethod as the decorator for required abstract methods
• For non-required abstract methods, use the pass or docstring in the implementation
• For required abstract methods, raise a NotImplementedError error as default implementation

✅ Do

class Building(ABC):

    # Non-required
    def destroy(self) -> None:
        pass

    # Required
    @abstractmethod
    def build(self) -> None:
        raise NotImplementedError()

❌ Don't

class Building(ABC):

    # Needs implementation without @abstractmethod
    def build(self) -> None:
        raise NotImplementedError()

    # Required but does not raises an error
    @abstractmethod
    def build(self) -> None:
        pass