text: from __future__ import print_function
  
  import re
  
  from django.contrib.admin.filters import FieldListFilter
  
  def TitledListFilter(title, list_filter_class=FieldListFilter):
      """
      Helper function to easily set a custom title on a list filter,
      since the default ModelAdmin.list_filter, and even the ListFilter
      class provides no simple way to do this.
      """
      def init(self, field, request, params, model, model_admin, field_path):
  
          # Determine the true class at runtime.
          # Ideally, we wouldn't have to do this if admin.validation.validate()
          # didn't force the list filter to be an subclass of FieldListFilter.
          true_cls = None
          for test, cls in list_filter_class._field_list_filters:
              if not test(field):
                  continue
              true_cls = cls
              break
          if not true_cls:
              raise Exception('No filter class found.')
  
          # Automagically transform the current object into an instance of
          # the target class.
          self.__class__ = true_cls
          self.__class__.__init__(self, field, request, params, model, model_admin, field_path)
  
          # Now, set a specific title. This is what all this nonsense is for.
          self.title = title
  
      nc = type('TitledFilter_%s' % re.sub('[^a-zA-Z]+', '_', title), (list_filter_class,), {})
      nc.__init__ = init
      return nc
  