new_contents: import socket
  
  
  def host_is_resolvable(hostname, _socket=None):
      _socket = _socket or socket  # just used for testing
      try:
          _socket.getaddrinfo(hostname, 0)
      except _socket.gaierror:
          msg = "hostname: %s is not resolvable" % hostname
          raise RuntimeError(msg)
      return True
  
subject: create a net module