# Implementor
class Device:
    def is_enabled(self):
        pass

    def enable(self):
        pass

    def disable(self):
        pass

# ConcreteImplementor
class TV(Device):
    def __init__(self):
        self._on = False

    def is_enabled(self):
        return self._on

    def enable(self):
        self._on = True

    def disable(self):
        self._on = False

class Radio(Device):
    def __init__(self):
        self._on = False

    def is_enabled(self):
        return self._on

    def enable(self):
        self._on = True

    def disable(self):
        self._on = False

# Abstraction
class RemoteControl:
    def __init__(self, device):
        self._device = device

    def toggle_power(self):
        if self._device.is_enabled():
            self._device.disable()
        else:
            self._device.enable()

# RefinedAbstraction
class AdvancedRemoteControl(RemoteControl):
    def mute(self):
        print("Device is muted.")

# Клиентский код
tv = TV()
remote = RemoteControl(tv)
remote.toggle_power()  # Включает TV

radio = Radio()
advanced_remote = AdvancedRemoteControl(radio)
advanced_remote.toggle_power()  # Включает Radio
advanced_remote.mute()  # Заглушает Radio

    # Implementor
class Device:
    def is_enabled(self):
        pass

    def enable(self):
        pass

    def disable(self):
        pass

# ConcreteImplementor
class TV(Device):
    def __init__(self):
        self._on = False

    def is_enabled(self):
        return self._on

    def enable(self):
        self._on = True

    def disable(self):
        self._on = False

class Radio(Device):
    def __init__(self):
        self._on = False

    def is_enabled(self):
        return self._on

    def enable(self):
        self._on = True

    def disable(self):
        self._on = False

# Abstraction
class RemoteControl:
    def __init__(self, device):
        self._device = device

    def toggle_power(self):
        if self._device.is_enabled():
            self._device.disable()
        else:
            self._device.enable()

# RefinedAbstraction
class AdvancedRemoteControl(RemoteControl):
    def mute(self):
        print("Device is muted.")

# Клиентский код
tv = TV()
remote = RemoteControl(tv)
remote.toggle_power()  # Включает TV

radio = Radio()
advanced_remote = AdvancedRemoteControl(radio)
advanced_remote.toggle_power()  # Включает Radio
advanced_remote.mute()  # Заглушает Radio