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