parsel使用

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基础使用

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from parsel import Selector

html = '''
<div>
    <ul>
         <li class="item-0">first item</li>
         <li class="item-1"><a href="link2.html">second item</a></li>
         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>
         <li class="item-1 active"><a href="link4.html">fourth item</a></li>
         <li class="item-0"><a href="link5.html">fifth item</a></li>
     </ul>
 </div>
'''
selector = Selector(text=html)
# 提取文本
items2 = selector.xpath('//li[contains(@class, "item-0")]//text()')
# 提取属性
items3 = selector.xpath('//li[contains(@class, "item-0")]/a/@href')
# 正则提取
result = selector.xpath('//li[contains(@class, "item-0")]/a/@href').re('link.*')
for item in items2:
		# first item
    # third item
    # fifth item
    print(item.get())
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