[XML-SIG] [ pyxml-Bugs-421553 ] stylesheet node reader requires '' NSURI
Fred L. Drake, Jr.
Tue, 8 May 2001 16:15:29 -0400 (EDT)
Karl Anderson writes:
> Can anyone shine some light on which DOM implementation is right here?
> After parsing an attribute with no namespace prefix, what namespace
> URIs should it be possible to retrieve that attribute with?
> For example, after parsing "<spam version="1.0"/>" in a namespace
> aware way, which should return "1.0":
> getAttributeNS(None, 'version')
> getAttributeNS('', 'version')
The former is correct according to past discussions in this mailing
> Only the URI of '' works for Domlette. Only the URI of None works for
> ParsedXML. I think that ParsedXML's restriction is morally better
> because of this line from the DOM rec:
Domlette is broke!
> OTOH, I've lost arguments when it was pointed out that you don't have
> to use DOM methods when you're parsing, and in fact can't parse
> everything if you're restricted to them. OTOH again, using None would
> make parsing consistent with setting namespaceless names using DOM
Using None would be the right thing because that's the Python DOM
> ParsedXML doesn't work for the XSLT modules in the current PyXML
> checkout because they use '' as the NSURI to use to retrieve NSless
> Should ParsedXML allow names parsed without a NS to be retrieved
> with a NSURI of '' as well as None? Should Domlette allow None?
> Should None be used in getAttributeNS calls like these, regardless?
Only None needs to be supported as an indication of "no namespace";
"" is different. (And probably broken.)
Fred L. Drake, Jr. <fdrake at acm.org>
PythonLabs at Digital Creations