【python小随笔】re模块中，以什么开头以什么结尾取中间内容

from lxml import etree
import requests
import re
headers = {
    'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36',
}
#session请求 拿到cookies
sessions = requests.Session() #创建一个session对象

# sessions.get(z_url,headers=headers)  #发送请求


url = 'http://www.agri.cn/V20/SC/jcyj_1/'

ret = sessions.get(url=url,headers=headers)
ret.encoding="utf-8"
ret_text =ret.text


tree= etree.HTML(ret_text)
#

li_list = tree.xpath('/html/body/table[3]//tr/td[1]/table[2]//tr/td/table[2]//tr/td[1]/a/script/text()')[0]
print(li_list)
# document.write(tit1_('<a href="./202005/t20200513_7387962.htm">5月份第1周畜产品和饲料集贸市场价格情况</a>')); 

dta = re.findall('htm">(.*)</a>',li_list)
print(dta)
# ['5月份第1周畜产品和饲料集贸市场价格情况']