Django view decorator for returning 404 if not authenticated

authenticated_or_404.py

from functools import update_wrapper

from django.http import Http404


class authenticated_or_404(object):
    def __init__(self, func):
        self.func = func
        update_wrapper(self, func)

    def __call__(self, request, *args, **kwargs):
        if not request.user.is_authenticated():
            raise Http404
        return self.func(request, *args, **kwargs)