code: def main():
      parser = get_parser()
      args = parser.parse_args()
      ARCHIVE = args.archive_path
      archive = (not args.no_archive)
      os.environ['F2FORMAT_VERSION'] = args.python
      os.environ['F2FORMAT_ENCODING'] = args.encoding
      def find(root):
          flst = list()
          temp = os.listdir(root)
          for file in temp:
              path = os.path.join(root, file)
              if os.path.isdir(path):
                  flst.extend(find(path))
              elif os.path.isfile(path):
                  flst.append(path)
              elif os.path.islink(path):
                  continue
          yield from flst
      def rename(path):
          stem, ext = os.path.splitext(path)
          name = '%s-%s%s' % (stem, uuid.uuid4(), ext)
          return os.path.join(ARCHIVE, name)
      if archive:
          os.makedirs(ARCHIVE, exist_ok=True)
      filelist = list()
      for path in sys.argv[1:]:
          if os.path.isfile(path):
              if archive:
                  dest = rename(path)
                  os.makedirs(os.path.dirname(dest), exist_ok=True)
                  shutil.copy(path, dest)
              filelist.append(path)
          if os.path.isdir(path):
              if archive:
                  shutil.copytree(path, rename(path))
              filelist.extend(find(path))
      def ispy(file): return (os.path.isfile(file) and (os.path.splitext(file)[1] in ('.py', '.pyw')))
      filelist = sorted(filter(ispy, filelist))
      if len(filelist) == 0:
          parser.error('argument PATH: no valid source file found')
      if mp is None  or CPU_CNT <= 1:
          [f2format(filename) for filename in filelist]
      else:
          mp.Pool(processes=CPU_CNT).map(f2format, filelist)