SessionAPI.py 文件源码

def login(self, username="", password=""):

        # logging in without credentials
        self.username = username
        response_page = self.codechef_session.get(CodechefSession.codechef_url)
        html_page = lxml.html.fromstring(response_page.text)
        hidden_inputs = html_page.xpath(
            r'//form//input[@type="hidden"]'
        )
        payload = {i.attrib["name"]: i.attrib["value"]
                   for i in hidden_inputs}
        payload['name'] = username
        payload['pass'] = password
        payload['op'] = 'Login'
        response = self.codechef_session.post(CodechefSession.codechef_url, data=payload)

        # removing extra sessions using simple scraping and form handling
        while response.url == CodechefSession.codechef_url + '/session/limit':
            html_page = lxml.html.fromstring(response.text)
            all_inputs = html_page.xpath(r'//form//input')
            payload = {i.attrib["name"]: i.attrib["value"] for i in all_inputs[::-1]}

            response = self.codechef_session.post(CodechefSession.codechef_url + '/session/limit', data=payload)
        soup = bs(response.content, 'lxml')
        name = soup.find(text=username)

        self.logged_in = bool(name)
        if self.logged_in: self.username = username
        return self.logged_in