[xml] Namespace equality with Python bindings

[Anthony Carrico <acarrico memebeam org>]

In libxml2 with Python bindings, what is the proper way to check for
xmlNS equality? Is a pointer compare possible? Is a string compare
necessary? Is it like this?:

ns = root.searchNsByHref(doc, "http://blahblah";)
ns.content == root.ns().content

Is this kind of "semantic" issue documented someplace?
Thanks!

-- 
Anthony Carrico