Django Status Code Middleware

gistfile1.py

class StatusCodeMiddleware(object):
    '''
    Returns the status_code.html file for the response.
    '''
    def process_response(self, request, response):
        status_code = getattr(response, 'status_code', None)
        if status_code and status_code >= 400:
            template = u'%s.html' % status_code
            try:
                response = render_to_response(
                    template,
                    {'content':response.content},
                    context_instance=RequestContext(request))
                response.status_code = status_code
            except TemplateDoesNotExist:
                pass

        return response