from lxml import etree
html = '''
<li class="tag_1">需要的内容1
<a>需要的内容2</a>
</li>
'''
selector = etree.HTML(html )
contents = selector.xpath ( '//li[@class = "tag_1"]')
contents1 = selector.xpath ( '//li[@class = "tag_1"]')[0]
contents2 = contents1.xpath('string(.)')
contents3 = selector.xpath ( '//li[@class = "tag_1"]/text()')
print(contents) #[<Element li at 0x2c55e88>]
print(contents1) # <Element li at 0x2c55e88>
print(contents2)
print(contents3)
输出
D:\Python\venv\Scripts\python.exe D:/Python/venv/test9.py
[<Element li at 0x2c75ec8>]
<Element li at 0x2c75ec8>
需要的内容1
需要的内容2
['需要的内容1\n ', '\n ']
Process finished with exit code 0string(.)可以用于提取标签嵌套标签的内容。
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