xpath的几种用法的区别

最新推荐文章于 2025-11-12 10:58:59 发布

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博客主要围绕XPath展开，重点探讨其用法以及不同用法之间的区别，有助于使用者更好地掌握和运用XPath进行相关操作。

**xpath的几种用法的区别**:

In [1]: sel.xpath('//title')
Out[1]: [<Selector xpath='//title' data=u'<title>Open Directory - Computers: Progr'>]

In [2]: sel.xpath('//title').extract()
Out[2]: [u'<title>Open Directory - Computers: Programming: Languages: Python: Books</title>']

In [3]: sel.xpath('//title/text()')
Out[3]: [<Selector xpath='//title/text()' data=u'Open Directory - Computers: Programming:'>]

In [4]: sel.xpath('//title/text()').extract()
Out[4]: [u'Open Directory - Computers: Programming: Languages: Python: Books']

In [5]: sel.xpath('//title/text()').re('(\w+):')
Out[5]: [u'Computers', u'Programming', u'Languages', u'Python']