code: def _extract_options(config, options, *args):
      
      extract = {}
      for key in args:
          if key not in args:
              continue
          extract[key] = config[key]
          option = getattr(options, key, None)
          if option is not None:
              extract[key] = option
      return extract
docs: Extract options values from a configparser, optparse pair.
  
      Options given on command line take precedence over options read in the
      configuration file.
  
      Args:
          config (dict): option values read from a config file through
              configparser
          options (optparse.Options): optparse 'options' object containing options
              values from the command line
          *args (str tuple): name of the options to extract