@staticmethod
    def last_mod():
        try:
            last_mod = Post.objects\
                .published()\
                .order_by('-created')[0]
            return last_mod.created
        except __HOLE__:
            return None
dataset/ETHPy150Open jamiecurle/django-omblog/omblog/ccsitemap.py/PostSiteMap.last_mod