The Purpose of a ABC metaclass is to assist you to detect gaps within your implementation; it never ever was intended to implement the categories in the attributes. Underneath is yet another instance on how @property can help when one particular has to refactor code and that is taken from https://affordablehousinggurugram.in/aipl-lake-city-sector-103-gurgaon-a-new-chapter-in-urban-luxury-living/