xpath特殊用法

• 查找如上h1标签下面的两个同级tab标签
  

div_h1 = et.xpath(u'//div/h1[contains(text(), "社保信息")]/following-sibling::table')
# com_dict['company_zch'] = ''.join(div.xpath(u".//span[contains(text(), '社会信用代码')]/following-sibling::*[1]/text()")).strip()

• 补全清理标签

有时候会遇到xpath获取不到的情况，这种情况很可能是html标签不规范等因素引起的，此时可以使用bs4的一个方法来清理标签，然后在xpath解析

import sys
reload(sys)
sys.setdefaultencoding('utf-8')
from lxml import etree
from bs4 import BeautifulSoup
s = open('1.html').read()
soup = BeautifulSoup(s, 'html5lib', from_encoding='utf-8')
html = soup.prettify()
et = etree.HTML(html)
content = et.xpath('string(.//div[@id="Zoom"])')
print content

参考博客1

赏

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