雪球登陆， 需要设置 cookies
        :param cookies: 雪球登陆需要设置 cookies， 具体见
            https://smalltool.github.io/2016/08/02/cookie/
        :return:

def login(self, user=None, password=None, **kwargs):
        """
        雪球登陆， 需要设置 cookies
        :param cookies: 雪球登陆需要设置 cookies， 具体见
            https://smalltool.github.io/2016/08/02/cookie/
        :return:
        """
        cookies = kwargs.get('cookies')
        if cookies is None:
            raise TypeError('雪球登陆需要设置 cookies， 具体见'
                            'https://smalltool.github.io/2016/08/02/cookie/')
        headers = self._generate_headers()
        self.s.headers.update(headers)

        self.s.get(self.LOGIN_PAGE)

        cookie_dict = helpers.parse_cookies_str(cookies)
        self.s.cookies.update(cookie_dict)

        log.info('登录成功')