i18n.py 文件源码

def get_translations(self, locale):
        """Returns a translation catalog for a locale.

        :param locale:
            A locale code.
        :returns:
            A ``babel.support.Translations`` instance, or
            ``gettext.NullTranslations`` if none was found.
        """
        trans = self.translations.get(locale)
        if not trans:
            locales = (locale, self.default_locale)
            trans = self.load_translations(self.translations_path, locales,
                                           self.domains)
            if not webapp2.get_app().debug:
                self.translations[locale] = trans

        return trans