为啥我的xpath 匹配不到呢？

Question

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<div class="tag"><span class="date">2018-06-20 16:54</span>

xpath：

  title_list=etree.HTML(response.content.decode('utf-8')).xpath('//div[@class="img"]/a[contains(@target,"_blank")]/@alt')

Answer 1

选取名为 alt 的所有属性应该用//@alt.
改成:

title_list=etree.HTML(response.content.decode('utf-8')).xpath('//div[@class="img"]/a[contains(@target,"_blank")]//@alt')

参考:Python爬虫利器三之Xpath语法与lxml库的用法