text: from django.core.exceptions import ImproperlyConfigured
  
  
  class TitleMixin(object):
      title = None
  
      def get_context_data(self, **kwargs):
          c = super(TitleMixin, self).get_context_data(**kwargs)
          if self.title is None:
              raise ImproperlyConfigured(
                  """
                  %s: You did not provide a Title for this view.
                  """ % self.__class__.__name__
              )
          title = self.title
          c['title'] = self.title
  
          return c
  
  