@expose("/msg/")
    def msg(self):
        flash(request.args.get("msg"), "info")
        return redirect(request.args.get("url"))
TODO: add docstring
dataset/ETHPy150Open airbnb/caravel/caravel/views.py/R.msg--crossover with--dataset/ETHPy150Open treasure-data/td-client-python/tdclient/bulk_import_model.py/BulkImport.valid_parts