code: def temporary_unavailable(request, template_name='503.html'):
      
      context = {
          'request_path': request.path,
      }
      return http.HttpResponseTemporaryUnavailable(
          render_to_string(template_name, context))
docs: Default 503 handler, which looks for the requested URL in the
      redirects table, redirects if found, and displays 404 page if not
      redirected.
  
      Templates: ``503.html``
      Context:
          request_path
              The path of the requested URL (e.g., '/app/pages/bad_page/')