code: def discover_roku():
      
  
      print("Searching for Roku devices within LAN ...")
      rokus = Roku.discover()
      if not rokus:
          print("Unable to discover Roku devices. " +
                "Try again, or manually specify the IP address with " +
                "\'roku <ipaddr>\' (e.g. roku 192.168.1.130)")
          return None
  
      print("Found the following Roku devices:")
      for i, r in enumerate(rokus):
          # dinfo = ' '.join(re.split(', |: ', str(r.device_info))[1:3])
          dinfo = ''
          print("[" + str(i+1) + "]   " + str(r.host) + ":" +
                str(r.port) + ' (' + dinfo + ')')
      print("")
  
      if len(rokus) == 1:
          print("Selecting Roku 1 by default")
          return rokus[0]
      else:
          print("Multiple Rokus found. Select the index of the Roku to control:")
  
          while True:
              try:
                  query = "Select (1 to " + str(len(rokus)) + ") > "
                  sel = int(input(query)) - 1
                  if sel >= len(rokus):
                      raise ValueError
                  else:
                      break
              except ValueError:
                  print("Invalid selection")
  
          return rokus[sel]
docs: Search LAN for available Roku devices. Returns a Roku object.