adapter_best.py

class Elf:
    name = 'Galadriel'

    def nall_nin(self):
        print('Elf says: Calling the Overlord ...')


class Dwarf:
    def estver_narho(self):
        print('Dwarf says: Calling the Overlord ...')


class Human:
    def ring_mig(self):
        print('Human says: Calling the Overlord ...')


class MinionAdapter:
    _initialised = False

    def __init__(self, minion, **adapted_methods):
        self.minion = minion

        for key, value in adapted_methods.items():
            func = getattr(self.minion, value)
            self.__setattr__(key, func)

        self._initialised = True

    def __getattr__(self, attr):
        """Attributes not in Adapter are delegated to the minion"""
        return getattr(self.minion, attr)

    def __setattr__(self, key, value):
        """Set attributes normally during initialisation"""
        if not self._initialised:
            super().__setattr__(key, value)
        else:
            """Set attributes on minion after initialisation"""
            setattr(self.minion, key, value)


if __name__ == '__main__':
    minion_adapters = [
        MinionAdapter(Elf(), call_me='nall_nin'),
        MinionAdapter(Dwarf(), call_me='estver_narho'),
        MinionAdapter(Human(), call_me='ring_mig')
    ]

    for adapter in minion_adapters:
        adapter.call_me()

    elf_adapter = minion_adapters[0]
    print()
    print(f'Name from Adapter: {elf_adapter.name}')
    print(f'Name from Minion: {elf_adapter.minion.name}')

    minion_adapters[0].name = 'Elrond'

    print()
    print(f'Name from Adapter: {elf_adapter.name}')
    print(f'Name from Minion: {elf_adapter.minion.name}')