code: def _translate_table(self, dest_dir, table_name, translations_writer):
          
          in_filename = os.path.join(self.src_dir, '%s.txt' % table_name)
          if not os.path.exists(in_filename):
              raise Exception('No %s' % table_name)
  
          out_filename = os.path.join(dest_dir, '%s.txt' % table_name)
          with open(in_filename, 'rb') as in_file:
              reader = csv.DictReader(in_file)
              if not reader.fieldnames or not any_translatable_field(
                      reader.fieldnames):
                  print('Copying %s with no translatable columns' % table_name)
                  shutil.copy(in_filename, out_filename)
                  return 0
              table_translator = TableTranslator(
                  table_name, reader.fieldnames, self.old_translations,
                  translations_writer)
              with open(out_filename, 'w+b') as out_file:
                  writer = csv.DictWriter(out_file, fieldnames=reader.fieldnames)
                  writer.writeheader()
                  for row in reader:
                      writer.writerow(table_translator.translate_row(row))
  
              table_translator.write_for_field_values()
              print('\ttranslation rows: %s' %
                    table_translator.total_translation_rows)
              return table_translator.total_translation_rows
docs: Converts translations to the new format for a single table.