docs: def launch_shell(username, hostname, password, port=22):
      """
      Launches an ssh shell
      """
      if not username or not hostname or not password:
          return False
  
      with tempfile.NamedTemporaryFile() as tmpFile:
          os.system(sshCmdLine.format(password, tmpFile.name, username, hostname,
                                      port))
      return True