def get_page(self, course, task):
        url = f'{self.host}/course/{course}/task/{task}/activity_show?blank=1'
        html = self.sess.get(url, headers=self.headers).content.decode('utf-8')
        fid = re.search('data-file-global-id="(.*?)"', html).group(1)
        token = re.search('ata-token="(.*?)"', html).group(1)
        url = f'https://play.qiqiuyun.net/sdk_api/play?resNo={fid}&token={token}&ssl=1&sdkType=js&lang=zh-CN&callback='
        res = self.sess.get(url, headers=self.headers).json()
        playlist_url = res['args']['playlist']
        vname = res['args']['resource']['name'].strip('.mp4')
        vname='Downloads/{}.mp4'.format(sx.检查文件名(vname))
        res = self.sess.get(playlist_url).text
        vurls = re.findall('(https://play.qiqiuyun.net/.*?)(\n|$)', res)
        for k,v in self.清晰度.items():
            for vurl in vurls:
                vurl=vurl[0]
                if v in vurl:
                    print(sx.scolor('正在下载：{}'.format(vname),'yes'),sx.scolor(k,'warn'))
                    return self.下载视频(p.文件路径, vurl)
        return self.下载视频(p.文件路径, vurl)

#仅供学习参考