code: def get_recent_posts(blog_id, username, password, number):
      
      user = authenticate(username, password)
      site = Site.objects.get_current()
      return [post_structure(entry, site)
              for entry in Entry.objects.filter(authors=user)[:number]]
docs: metaWeblog.getRecentPosts(blog_id, username, password, number)
      => post structure[]