获取新闻内容

        :param url: 新闻url
        :return: html code

def get_news_content(self, url):
        """获取新闻内容

        :param url: 新闻url
        :return: html code
        """
        res = WyuNews.__wyu_news_content(url)
        soup = BeautifulSoup(res, from_encoding='utf-8')
        tag_table = soup.find(self.__get_tag_table)

        tr = tag_table.findAll('tr')[4]

        return tr.decode()