ABC

• ABC: Abstract Base Class
• Always use the ABC as base class for abstract classes
• Avoid using the ABCMeta to define an abstract class
• Do not use prefix of suffix to determinate if the class is abstract or not

✅ Do

class Building(ABC):
    pass

❌ Don't

class Building:
    pass

class BuildingABC(ABC):
    pass

class Building(metaclass=ABCMeta):
    pass