adding a class via python
Having a such html
somehtml = "<p>Here is my solution: </p><pre><code> some code here </code> </pre> <pre>this is not a code</pre>"
Via python I want to add class "foo" to those <pre> tags which contains a child <code> thus my output will be :
somehtml = "<p>Here is my solution: </p><pre class="foo"><code> so开发者_如何学Cme code here </code> </pre> <pre>this is not a code</pre>"
How can I achieve this ?
Using lxml, it could be done like this:
import lxml.html as lh
import io
somehtml = "<p>Here is my solution: </p><pre><code> some code here </code> </pre> <pre>this is not a code</pre>"
doc=lh.parse(io.BytesIO(somehtml))
root=doc.getroot()
pres=root.xpath('//pre/code/..')
for pre in pres:
pre.attrib['class']='foo'
print(lh.tostring(root))
yields
<html><body><p>Here is my solution: </p><pre class="foo"><code> some code here </code> </pre> <pre>this is not a code</pre></body></html>
加载中,请稍侯......
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