code: def start(address, channel, key, loop=None):
      
  
      if loop is None:
          loop = asyncio.get_event_loop()
  
      socket = yield from websockets.connect(address+"/robot", loop=loop)
  
      conn = Connection(socket, loop)
      yield from conn.send(_create_handshake(channel, key))
  
      return conn
docs: Starts a new Interactive client.
  
      Takes the remote address of the Tetris robot, as well as the
      channel number and auth key to use. Additionally, it takes
      a list of handler. This should be a dict of protobuf wire
      IDs to handler functions (from the .proto package).