text: from TV import TV
  
  def main():
      tv1=TV()
      tv1.turnOn()
      tv1.setChannel(30)
      tv1.setVol(4)
  
      tv2=TV()
      tv2.turnOn()
      tv2.channelUp()
      tv2.channelUp()
      tv2.volumeUp()
  
      print("tv1's channel is ",tv1.getchannel(),"and volume level" ,tv1.getVol())
      print("tv2's channel is ",tv2.getchannel(),"and volume level" ,tv2.getVol())
  main()
  