Python：编码转换

用Json.loads出来的内容是Unicode格式，写了一个简单的转换函数，把结果转成都转成UTF-8的格式：

def json_unicode2utf8(js):
    if isinstance(js, dict):
        for key, value in js.items():
            k = copy.deepcopy(key).encode('utf-8')
            v = copy.deepcopy(value)
            del js[key]
            js[k] = v
            if isinstance(v, dict):
                json_unicode2utf8(v)
            elif isinstance(v, list):
                json_unicode2utf8(v)
            else:
                if isinstance(v, (str, unicode)):
                    v = v.encode('utf-8')
                js[k] = v

    elif isinstance(js, list):
        for n in range(len(js)):
            if isinstance(js[n], dict):
                json_unicode2utf8(js[n])
            elif isinstance(js[n], list):
                json_unicode2utf8(js[n])
            else:
                if isinstance(js[n], (str, unicode)):
                    js[n] =js[n].encode('utf-8')
    else:
        print js.encode('utf-8')