示例Html:
<div class='abc'>
<a href='https://blog.csdn.net/weixin_41767339'>
Hello word!
</a>
</div>
response.css("div.abc a::attr(href)").extract()[0]
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示例Html:
<div class='abc'>
<a href='https://blog.csdn.net/weixin_41767339'>
Hello word!
</a>
</div>
response.css("div.abc a::attr(href)").extract()[0]