code: def localize(self, formatter, translator, *args, **kwargs):
          
          if self.plural is not None:
              n, _ = formatter.get_field(self.number_index, args, kwargs)
              translated = translator.ngettext(self.singular,
                                               self.plural,
                                               n)
          else:
              translated = translator.gettext(self.singular)
          return formatter.vformat(translated, args, kwargs)
docs: Localize and format the string using the given `formatter` and
          `translator`. The remaining args are passed to the
          :meth:`~LocalizingFormatter.format` method of the `formatter`.
  
          The `translator` must be an object supporting the
          :class:`gettext.NullTranslations` interface.
  
          If :attr:`plural` is not :data:`None`, the number which will be passed
          to the `ngettext` method of `translator` is first extracted from the
          `args` or `kwargs`, depending on :attr:`number_index`. The whole
          semantics of all three are described in
          :meth:`string.Formatter.get_field`, which is used by this method
          (:attr:`number_index` is passed as `field_name`).
  
          The value returned by :meth:`~string.Formatter.get_field` is then used
          as third argument to `ngettext`, while the others are sourced from
          :attr:`singular` and :attr:`plural`.
  
          If :attr:`plural` is :data:`None`, the `gettext` method of `translator`
          is used with :attr:`singular` as its only argument.
  
          After the translation step, the `formatter` is used with the translated
          string and `args` and `kwargs` to obtain a formatted version of the
          string which is then returned.
  
          All of this works best when using a :class:`LocalizingFormatter`.