docs: def _show_info(app):
      """
          显示系统信息
      """
      print ("Server start on port {0} (processes: {1}) ...".format(app.port, app.processes))
      print ("Start time: {0}".format(datetime.now().isoformat(" ")))
  
      print
  
      print ("Parameters:")
      for k in sorted(dir(__conf__)):
          if k.startswith("__"): continue
          print ("  {0:<20} : {1}".format(k, getattr(__conf__, k)))
  
      print
  
      print ("Handlers:")
      handlers = sorted(app.handlers, key = lambda h: h[0])
      pprint(handlers)
  
      print