Python 3 Deep Dive Part 4 Oop Here

You can intercept class construction by writing a custom metaclass. This allows you to modify class attributes, enforce API contracts, or register classes automatically upon definition.

class Drawable(ABC): @abstractmethod def draw(self): pass python 3 deep dive part 4 oop

class LoanManager: def __init__(self): self._loans = {} # item_id -> due_date You can intercept class construction by writing a

: Prevents the dynamic addition of any new attributes outside those listed in __slots__ . It can also break multiple inheritance architectures if not handled carefully. 7. Metaclasses: The Code that Writes Code enforce API contracts