如何重定向到非英文字符的网址？

http://localhost:5000/article/111/文章标题

request.headers

referer

if user_logout:
    referer = request.headers.get('referer', '/')
    redirect(referer)

  WebError Traceback:
  UnicodeDecodeError: 'ascii' codec can't decode byte 0xd5 in position 140: ordinal not in range(128) 
View as:   Interactive (full)  |  Text (full)  |  XML (full) clear this 
clear this 
URL: http://localhost:5000/users/logout

Module weberror.evalexception:431 in respond          view

urllib.quote()

referer = quote_path(url) # only quote the path of the url
redirect(referer)