报错内容是：
Traceback (most recent call last):
File "G:/squid_frame/app_spider/spider_3_sina/sina_2_content_spider.py", line 169, in <module>
sina_content_spider(item=item)
File "G:/squid_frame/app_spider/spider_3_sina/sina_2_content_spider.py", line 107, in sina_content_spider
content = '<br/>'.join(content_list)
TypeError: sequence item 0: expected string, Tag found
解决办法：
soup = BeautifulSoup(result, 'html.parser')
content_list = soup.find_all('p', attrs={"class": "art_p"})
content = ' <br>'.join(str(ii) for ii in content_list)