code: def recompress_archive(archive, verbosity=0, interactive=True):
      
      util.check_existing_filename(archive)
      util.check_writable_filename(archive)
      if verbosity >= 0:
          util.log_info("Recompressing %s ..." % (archive,))
      res = _recompress_archive(archive, verbosity=verbosity, interactive=interactive)
      if res and verbosity >= 0:
          util.log_info(res)
      return 0
docs: Recompress an archive to hopefully smaller size.