xpath总是返回空列表问题实例，跪求解
程序的目的是在lianjia网站的思明区底下翻页的地方，爬取到思明区共有几页。代码无误，但总是返回空列表
import requests
from lxml import etree
address_1 = "https://xm.lianjia.com/xiaoqu/siming"
User_Agent_1 = {'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36'}
request_1 = requests.get(url=address_1, headers=User_Agent_1).text
parse_1 = etree.HTML(request_1)
pages = parse_1.xpath('//div[@class="page-box fr"]//a[@href]/text()')
print(pages)
