code: def _api_config_item(self, item):
          
          response.content_type = 'application/json; charset=utf-8'
  
          config_dict = self.config.as_dict()
          if item not in config_dict:
              abort(400, "Unknown configuration item %s" % item)
  
          try:
              # Get the JSON value of the config' dict
              args_json = json.dumps(config_dict[item])
          except Exception as e:
              abort(404, "Cannot get config item (%s)" % str(e))
          return args_json
docs: Glances API RESTful implementation.
  
          Return the JSON representation of the Glances configuration item
          HTTP/200 if OK
          HTTP/400 if item is not found
          HTTP/404 if others error