code: def _write_section(self, fp, section_name, section_items, delimiter):
          
          fp.write("[{0}]\n".format(section_name))
          for key, value in section_items:
              value = self._interpolation.before_write(self, section_name, key,
                                                       value)
              if value is not None or not self._allow_no_value:
                  value = delimiter + str(value).replace('\n', '\n\t')
              else:
                  value = ""
              fp.write("{0}{1}\n".format(key, value))
          fp.write("\n")
docs: Write a single section to the specified `fp'.