isp_after_refactoring.py

class WallPoweredDevice: 
  def plugInPower(self, device):
    self.__connectToDeviceViaPowerOutlet(device)

  def __connectToDeviceViaPowerOutlet(self, device): None 

class AnalogDevice:
  def _connectToDeviceViaRCACord(self, device): None 

class DigitalDevice:
  def _connectToDeviceViaHDMICord(self, device): None 

class InternetDevice: 
  def _connectToDeviceViaEthernetCord(self, device): None



class Television(WallPoweredDevice, InternetDevice, AnalogDevice):
  def connectToDVD(self, dvdPlayer):
    self._connectToDeviceViaRCACord(dvdPlayer)

  def connectToGameConsole(self, gameConsole):
    self._connectToDeviceViaHDMICord(gameConsole)

  def connectToRouter(self):
    self._connectToDeviceViaEthernetCord(self)


class DvdPlayer(WallPoweredDevice, AnalogDevice):
  def connectToTV(self, television):
    self._connectToDeviceViaRCACord(television)




class GameConsole(WallPoweredDevice, InternetDevice, DigitalDevice):
  def conenctToTV(self, television):
    self._connectToDeviceViaHDMICord(television)

  def connectToRouter(self):
    self._connectToDeviceViaEthernetCord(self)



class Router(WallPoweredDevice):
  def connectToTV(self, television):
    self._connectToDeviceViaEthernetCord(television)

  def connectToGameConsole(self, gameConsole):
    self._connectToDeviceViaEthernetCord(gameConsole)

  def plugInPower(self):
    self._connectDeviceToPowerOutlet(self)