Combine two querysets from different models in Django

combined-django-querysets.py

import datetime
from blog.models import BlogEntry
from news.models import NewsEntry


def get_fresh_news_and_blog_entries():
    u"""Returns a list containing published news entries and blog posts mixed,
    sorted by publish date. Suitable for template context of, say, landing page.
    """
    news = list(NewsEntry.objects.
        filter(publish_on__lt=datetime.datetime.now()).
        order_by('-publish_on'))
    blog = list(BlogEntry.objects.
        filter(publish_on__lt=datetime.datetime.now()).
        order_by('-publish_on'))
    return sorted(news + blog, key=lambda item: item.publish_on, reverse=True)