javascript - 像javascript一样在python中递归解码URI组件

Question

我有一个编码的 URI 组件 “http://www.yelp.com/biz/carriage-house-caf%25C3%25A9-houston-2”。我可以通过如下递归地应用 decodeURIComponent 函数将其转换为 "http://www.yelp.com/biz/carriage-house-café-houston-2"

function recursiveDecodeURIComponent(uriComponent){
        try{
            var decodedURIComponent = decodeURIComponent(uriComponent);
            if(decodedURIComponent == uriComponent){
                return decodedURIComponent;
            }
            return recursiveDecodeURIComponent(decodedURIComponent);
        }catch(e){
            return uriComponent;
        }
    }
    console.log(recursiveDecodeURIComponent("http://www.yelp.com/biz/carriage-house-caf%25C3%25A9-houston-2"))

输出:“http://www.yelp.com/biz/carriage-house-café-houston-2”。

我想在 python 中得到相同的结果。我尝试了以下方法:

print urllib2.unquote(urllib2.unquote(urllib2.unquote("http://www.yelp.com/biz/carriage-house-caf%25C3%25A9-houston-2").decode("utf-8")))

但我得到了 http://www.yelp.com/biz/carriage-house-café-houston-2。我得到的不是预期字符 é，而是 'É'，无论调用 urllib2.unquote 的次数如何。

我正在使用python2.7.3，谁能帮帮我？

Answer 1

我想一个简单的循环就可以解决问题:

uri = "http://www.yelp.com/biz/carriage-house-caf%25C3%25A9-houston-2"

while True:
    dec = urllib2.unquote(uri)
    if dec == uri:
        break
    uri = dec

uri = uri.decode('utf8')
print '%r' % uri  
# u'http://www.yelp.com/biz/carriage-house-caf\xe9-houston-2'