Re: Remove namespace declaration from ElementTree in lxml

:

I want to remove an unused namespace declaration from the root element
of an ElementTree in lxml.

[...] I'm reduced to sticking the output through str.replace() ...
which is somewhat inelegant.

And also a bit error prone (unless you are sure the replaced string really
only occurs where you want to replace it).

"Nada es seguro" ... but it does seem unlikely that

' xmlns:someprefix="urn:foo:bar"'

will appear in the content. Not impossible though, I suppose. If I
want to try and make sure I only catch it as an element's attribute,
that leads me to a regex, which seems an even less clever idea.

You can try this:

root = etree.parse(...).getroot()
new_root = etree.Element(root.tag, root.attrib)
new_root[:] = root[:]

Note, however, that this will not copy root-level PIs or internal DTD subsets.
But you can copy PIs and comments by hand.

Thanks. I considered copying the tree, but didn't bother trying it as
I would expect it to be fairly expensive. Maybe no more expensive than
a regex though. I'll take a look ...

-[]z.
.

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