code: def _do_readme_update(self):
          
          import codecs
          import glob
  
          # read in,
          data_in = codecs.open(
              os.path.join(HERE, 'README.rst'), 'r', 'utf8').read()
  
          # search for beginning and end positions,
          pos_begin = data_in.find(self.README_PATCH_FROM)
          assert pos_begin != -1, (pos_begin, self.README_PATCH_FROM)
          pos_begin += len(self.README_PATCH_FROM)
  
          pos_end = data_in.find(self.README_PATCH_TO)
          assert pos_end != -1, (pos_end, self.README_PATCH_TO)
  
          glob_pattern = os.path.join(HERE, 'data', '*.txt')
          file_descriptions = [
              self._describe_file_header(fpath)
              for fpath in glob.glob(glob_pattern)]
  
          # patch,
          data_out = (
              data_in[:pos_begin] +
              '\n\n' +
              '\n'.join(file_descriptions) +
              '\n\n' +
              data_in[pos_end:]
          )
  
          # write.
          print("patching {} ..".format(self.README_RST))
          codecs.open(
              self.README_RST, 'w', 'utf8').write(data_out)
docs: Patch README.rst to reflect the data files used in release.