extensionclass

from ExtensionClass import Base class Container(Base): pass class Item(Base): def __init__(self): self.visited = [] def __of__(self, parent): # The __of__ method is called when an Item is accessed # through a parent (acquisition-like behavior). self.visited.append(parent) return self container = Container() item = Item() print(f"Initial item visited list: {item.visited}") # Accessing item through container triggers __of__ container.item1 = item accessed_item = container.item1 print(f"After accessing through container: {item.visited}") # Accessing again demonstrates __of__ being called multiple times accessed_item_again = container.item1 print(f"After accessing again: {item.visited}")