cli.py 文件源码

def onecmd(self, line):
    """
    Wrap error handling around cmd.Cmd.onecmd().  Might want to do
    something kinder than showing a traceback, eventually.
    """

    self.last_command_failed = False
    try:
      return cmd.Cmd.onecmd(self, line)
    except SystemExit:
      raise
    except ExitArgparse, e:
      if e.message is not None:
        print e.message
      self.last_command_failed = e.status != 0
      return False
    except BadCommandSyntax, e:
      print e
    except Exception:
      traceback.print_exc()
    self.last_command_failed = True
    return False