Tutorials Programming Tutorials, Guides & Best Practices

class RegistryMeta(type):
    registry = {}

    def __new__(cls, name, bases, dct):
        new_class = super().__new__(cls, name, bases, dct)
        cls.registry[name] = new_class
        return new_class

class Base(metaclass=RegistryMeta):
    pass

class Derived1(Base):
    pass

class Derived2(Base):
    pass

print(RegistryMeta.registry)  # Output: {'Base': <class 'Base'>, 'Derived1': ..., 'Derived2': ...}

Dynamic class creation is useful when class structures depend on runtime information.