from django.conf import settings
from django.http import HttpResponseForbidden
from django.shortcuts import redirect
from django.template import Context, RequestContext, loader
from django.utils.translation import ugettext as _
from django.utils.version import get_docs_version
def csrf_failure(request, reason=""):
from django.middleware.csrf import REASON_BAD_TOKEN, REASON_NO_REFERER, REASON_NO_CSRF_COOKIE