lxml namespace as an attribute
Skip Montanaro
skip.montanaro at gmail.com
Wed Aug 15 17:25:44 EDT 2018
Much of XML makes no sense to me. Namespaces are one thing. If I'm
parsing a document where namespaces are defined at the top level, then
adding namespaces=root.nsmap works when calling the xpath method. I
more-or-less get that.
What I don't understand is how I'm supposed to search for a tag when
the namespace appears to be defined as an attribute of the tag itself.
I have some SOAP XML I'm trying to parse. It looks roughly like this:
<s: Envelope xmlns:a="..." xmlns:s="...">
<s:Header>
...
</s:Header>
<s:Body>
<Tag xmlns="http://some/new/path">
...
</Tag>
</s:Body>
If the document is "doc", I can find the body like so:
body = doc.xpath(".//Body" namespaces=doc.nsmap)
I don't understand how to find Tag, however. When I iterate over the
body's children, printing them out, I see that Tag's name is actually:
{http://some/new/path}Tag
yet that namespace is unknown to me until I find Tag. It seems I'm
stuck in a chicken-and-egg situation. Without knowing that
http://some/new/path namespace, is there a way to cleanly find all
instances of Tag?
Thx,
Skip
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