old_contents: from wtforms import form
  from wtforms.ext.i18n.utils import get_translations
  
  translations_cache = {}
  
  class Form(form.Form):
      """
      Base form for a simple localized WTForms form.
     
      This will use the stdlib gettext library to retrieve an appropriate
      translations object for the language, by default using the locale
      information from the environment.
  
      If the LANGUAGES class variable is overridden and set to a sequence of
      strings, this will be a list of languages by priority to use instead, e.g::
          LANGUAGES = ['en_GB', 'en']
  
      Translations objects are cached to prevent having to get a new one for the
      same languages every instantiation. 
      """
      LANGUAGES = None
  
      def _get_translations(self):
          languages = tuple(self.LANGUAGES) if self.LANGUAGES else None
          if languages not in translations_cache:
              translations_cache[languages] = get_translations(languages)
          return translations_cache[languages]
  
new_contents: from wtforms import form
  from wtforms.ext.i18n.utils import get_translations
  
  translations_cache = {}
  
  class Form(form.Form):
      """
      Base form for a simple localized WTForms form.
  
      This will use the stdlib gettext library to retrieve an appropriate
      translations object for the language, by default using the locale
      information from the environment.
  
      If the LANGUAGES class variable is overridden and set to a sequence of
      strings, this will be a list of languages by priority to use instead, e.g::
  
          LANGUAGES = ['en_GB', 'en']
  
      Translations objects are cached to prevent having to get a new one for the
      same languages every instantiation. 
      """
      LANGUAGES = None
  
      def _get_translations(self):
          languages = tuple(self.LANGUAGES) if self.LANGUAGES else None
          if languages not in translations_cache:
              translations_cache[languages] = get_translations(languages)
          return translations_cache[languages]
  
subject: Fix docstring indentation issue in ext.i18n.form