基础代码如下，详细使用方法参考：
查看详细用法

组件安装：pip install lxml

# -*- coding:utf-8 -*-
import requests
from lxml import etree

url="http://music.baidu.com"
r=requests.get(url)
r.encoding="utf-8"
html=r.text
# print(html)
selector = etree.HTML(html)
Tlist=selector.xpath('//body/div/div/div/div/div/ul/li/a/text()')
for T in Tlist:
    print(T)