python 爬虫正则匹配不完全

Question

response = requests.get('https://36kr.com/newsflashes')
        all_list=re.findall(
            '"title":"(.*?)","catch_title":"","description":".*?","cover":"","news_url_type":"news_url","news_url":"(.*?)","user_id":"344033181","published_at":"(.*?)",',
            response.text, re.S)        print(all_list)        print(len(all_list))

我这个正则为啥不能匹配全部呢？只能匹配16个 ，总共是20个标题
https://36kr.com/newsflashes 这是网址