code: def extract_feed(
      inpath: str, outpath: str, view: View, config: nx.DiGraph = None
  ) -> str:
      
      config = default_config() if config is None else config
      config = remove_node_attributes(config, "converters")
      feed = load_feed(inpath, view, config)
      return write_feed_dangerously(feed, outpath)
docs: Extract a subset of a GTFS zip into a new file