code: def get_file(cls, filename=None):
          
  
          if filename is None:
              filename = CONFIG
  
          config = configparser.ConfigParser()
          if os.path.exists(filename):
              with codecs.open(filename, encoding='utf-8') as fp:
                  config.readfp(fp)
  
          return cls._parse_rtv_file(config)
docs: Load settings from an rtv configuration file.