def unicode_it(html):
    if isinstance(html, str):
        r = chardet.detect(html)
        if r["confidence"] >= 0.7:
            encoding = r["encoding"]
            if encoding.lower() == "gb2312":
                charset = charset_pattern.findall(html)
                if not charset or charset[0
 
].lower().strip() == "gbk":
                    encoding = "gbk"
            print encoding
            s = html.decode(encoding)
            return s
    else:
        return html