通过python的XPath

result=[ 'Sharpen your pencil (or, alternatively, use your pen)', 'In a large paper sheet, write your name. When the ink thickens slightly, gently open the envelop and insert the letter inside folded into 3. Set aside', 'Use the pen again to write your name and address into the envelop. Include the destination address', 'Seal the envelop and stamp it' ]

for a in tree.xpath('//*[@itemprop="instructions"]'): for i in a.xpath('./p'): temptext = "" for c in i.xpath('text()'): temptext += c for c in i.xpath('./a'): temptext += c.text tempIteration.append(temptext)

result=[ 'Sharpen your (or, alternatively, use your pen)pencil', 'In a large paper sheet, write your name. When the ink thickens slightly, gently open the and insert the inside folded into 3. Set asideenvelopletter', 'Use the pen again to your name and address into the envelop. Include the destination writeaddress', 'Seal the envelop and stamp it', 'Instruction Courtesy of John Doe' ]

2条回答

网友

1楼 · 编辑于 2024-05-29 04:19:14

您可以使用getchildren()方法和元素的text和tail属性。我从未使用过lxml，但从文档here中我得到了它，可以在下面的示例中使用。你知道吗

from lxml import etree

html='''<html>
<body>
<div class="directions" itemprop="instructions">
<h6>Instructions</h6>
<p>Sharpen your <a href="pencil.html" class="crosslink">pencil</a> (or, alternatively, use your pen)</p>
<p>In a large paper sheet, write your name. When the ink thickens slightly, gently open the <a href="envelop.html" class="crosslink">envelop</a> and insert the <a href="letter.html" class="crosslink" >letter</a> inside folded into 3. Set aside.</p>
<p>Use the pen again to <a href="write.html" class="crosslink">write</a> your name and address into the evelope. Include the destination <a href="address.html" class="crosslink">address</a>.</p>
  <p>Seal the envelop and stamp it</p>
<p class="copyright">Instruction courtesy of John Doe</p>
</div>
</body>
  </html>'''

tree=etree.HTML(html)
result=[]
for a in tree.xpath('//*[@itemprop="instructions"]'):
    for i in a.xpath('./p'):
        temptext = ""
        temptext += i.text
        for j in i.getchildren():
            temptext += j.text
            temptext += j.tail
        result.append(temptext)

print result

这就产生了

[
'Sharpen your pencil (or, alternatively, use your pen)', 
'In a large paper sheet, write your name. When the ink thickens slightly, gently open the envelop and insert the letter inside folded into 3. Set aside.', 
'Use the pen again to write your name and address into the evelope. Include the destination address.', 
'Seal the envelop and stamp it', 
'Instruction courtesy of John Doe'
]

然后你可以做result[:-1]扔掉最后一个

网友

2楼 · 编辑于 2024-05-29 04:19:14

不确定这是否有帮助，我对XPATH的了解是有限的，但这可能是因为您没有关闭<div class="directions" itemprop="instructions">元素吗？你知道吗

你不应该有这个：

<html>
<body>
    <div class="directions" itemprop="instructions">
        <h6>Instructions</h6>
        <p>Sharpen your <a href="pencil.html" class="crosslink">pencil</a> (or, alternatively, use your pen)</p>
        <p>In a large paper sheet, write your name. When the ink thickens slightly, gently open the <a href="envelop.html" class="crosslink">envelop</a> and insert the <a href="letter.html" class="crosslink" >letter</a> inside folded into 3. Set aside.</p>
        <p>Use the pen again to <a href="write.html" class="crosslink">write</a> your name and address into the evelope. Include the destination <a href="address.html" class="crosslink">address</a>.</p>
        <p>Seal the envelop and stamp it</p>
    </div>
    <p class="copyright">Instruction courtesy of John Doe</p>
</body>
</html>

注意，我添加了</div>

希望这有帮助：）

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