new_contents: #DEFAULT SOURCE FROM: https://github.com/pythonanywhere/jab/blob/master/jab/feeds.py
  
  from django.conf import settings
  from django.contrib.syndication.views import Feed
  from django.utils.feedgenerator import Rss201rev2Feed
  
  from jab.models import Post
  
  # Keep Chrome happy as per http://stackoverflow.com/a/1081023/32846 -- thanks to
  # David and Everyblock
  class CorrectMimeTypeFeed(Rss201rev2Feed):
      mime_type = 'application/xml'
  
  
  class LatestEntriesFeed(Feed):
      feed_type = CorrectMimeTypeFeed
  
      title = settings.BLOG_NAME
      link = "/"
      description = settings.BLOG_DESCRIPTION
  
      description_template = 'jab/feed_description.html'
  
      def author_name(self):
          return settings.BLOG_AUTHOR
  
      def items(self):
          return Post.published_posts().filter(show_in_list_and_rss=True)[:20]
  
      def item_title(self, item):
          return item.title
  
      def item_description(self, item):
          return item.contents
  
      def item_author_name(self, item):
          return item.author.username
  
      def item_pubdate(self, item):
          return item.publication_date
  
subject: Create xml-feed.py