def page_missing(request, page_name, revision_requested, protected=False):
 return Response(generate_template('page_missing.html', page_name=page_name, revision_requested=revision_requested, protected=protected), status=404)

def page_missing ( request , page_name , revision_requested , protected = False ) : return Response ( generate_template ( 'page_missing.html' , page_name = page_name , revision_requested = revision_requested , protected = protected ) , status = 404 )
displayed if page or revision does not exist .