PYTHON PYQUERY 基本用法

Posted 2021-01-09 徐李帅

引用方法

from pyquery import PyQuery as pq

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基本CSS选择器

from pyquery import PyQuery as pq
html = ‘‘‘
    <div id="wrap">
        <ul class="s_from">
            asdasd
            <link href="http://asda.com">asdadasdad12312</link>
            <link href="http://asda1.com">asdadasdad12312</link>
            <link href="http://asda2.com">asdadasdad12312</link>
        </ul>
    </div>
‘‘‘
doc = pq(html)
print doc("#wrap .s_from link")

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运行结果

<link href="http://asda.com">asdadasdad12312</link>
            <link href="http://asda1.com">asdadasdad12312</link>
            <link href="http://asda2.com">asdadasdad12312</link>

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#是查找id的标签  .是查找class 的标签  link 是查找link 标签 中间的空格表示里层

遍历查找结果

from pyquery import PyQuery as pq
html = ‘‘‘
    <div href="wrap">
        hello nihao
        <ul class="s_from">
            asdasd
            <link class=‘active1 a123‘ href="http://asda.com">asdadasdad12312</link>
            <link class=‘active2‘ href="http://asda1.com">asdadasdad12312</link>
            <link class=‘movie1‘ href="http://asda2.com">asdadasdad12312</link>
        </ul>
    </div>
‘‘‘

doc = pq(html)
its=doc("link").items()
for it in its:
    print(it)

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运行结果

<link class="active1 a123" href="http://asda.com">asdadasdad12312</link>
            
<link class="active2" href="http://asda1.com">asdadasdad12312</link>
            
<link class="movie1" href="http://asda2.com">asdadasdad12312</link>

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获取属性信息

from pyquery import PyQuery as pq
html = ‘‘‘
    <div href="wrap">
        hello nihao
        <ul class="s_from">
            asdasd
            <link class=‘active1 a123‘ href="http://asda.com">asdadasdad12312</link>
            <link class=‘active2‘ href="http://asda1.com">asdadasdad12312</link>
            <link class=‘movie1‘ href="http://asda2.com">asdadasdad12312</link>
        </ul>
    </div>
‘‘‘

doc = pq(html)
its=doc("link").items()
for it in its:
    print(it.attr(‘href‘))
    print(it.attr.href)

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  运行结果

http://asda.com
http://asda.com
http://asda1.com
http://asda1.com
http://asda2.com
http://asda2.com

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 获取文本

from pyquery import PyQuery as pq
html = ‘‘‘
    <div href="wrap">
        hello nihao
        <ul class="s_from">
            asdasd
            <link class=‘active1 a123‘ href="http://asda.com">asdadasdad12312</link>
            <link class=‘active2‘ href="http://asda1.com">asdadasdad12312</link>
            <link class=‘movie1‘ href="http://asda2.com">asdadasdad12312</link>
        </ul>
    </div>
‘‘‘

doc = pq(html)
its=doc("link").items()
for it in its:
    print(it.text())

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 运行结果

asdadasdad12312
asdadasdad12312
asdadasdad12312

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