text: from werkzeug.routing import Map, Rule, Submount
  
  map = Map([
      Rule('/', endpoint='#language_select'),
      Submount('/<string(length=2):lang_code>', [
          Rule('/', endpoint='index'),
          Rule('/about', endpoint='about'),
          Rule('/blog/', endpoint='blog/index'),
          Rule('/blog/<int:post_id>', endpoint='blog/show')
      ])
  ])
  