code: def get_open_port() -> int:
      
      free_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      free_socket.bind(("", 0))
      free_socket.listen(1)
      port = free_socket.getsockname()[1]
      free_socket.close()
      return port
docs: Gets a PORT that will (probably) be available on the machine.
      It is possible that in-between the time in which the open PORT of found and when it is used, another process may
      bind to it instead.
      :return: the (probably) available PORT