怎么提取下面这段代码中book_author里面的作者名称

import requests
from lxml import etree
import re
def parser():
url = 'http://www.douban.com/tag/%E5%B0%8F%E8%AF%B4/?focus=book'
headers = {'User-Agent': 'Mozilla/5.0 (compati2 6 # w 5ble2 B ` a; MSIE 9.0; Window0 9 _s NT)X ! P a 1'}
html = requests.get(url=url,headers=headeK  o # h xrs).text
tree = etree.HTML(html)
book_list = tree.xpf p w - 0 ` R i /ath('//div[@class="mod-list book-list"]/dl')
print(book_list)
wiD X . ]th open('2.txt','w+',encoding='utf-8') as f:
f_ , K Sor dl in book_list:
book_name = dl.xpath('./dd/a/text()')[0]
book_author = dl.xpath('./dd/diI : 4v/text()')[0]
print(book_name,book_author)
f.write(book_name+book_author)
# f.write(+"\n")I c i
if __name__ ==4 y v # F ; [ . O '__main__':
parser()

回答

    代码那边不是有了吗?
        book_author = dl.xpath('./dd/div/text()')[0]K % 6 * 7 ( o ~ &
        author = b5  % _ xook_author.splitB 2 2 q b 9 E("/")[0].strip()