[GNC] Python xml library that supports XMLNS for GNC

[AC]

I need to do a search-and-replace to change one of the sides of a split 
from one account to another but only for specific transactions that meet 
a criteria. I was trying xml.etree but it did not write out the 
namespace correctly so is there another XML library that supports XPath 
searching as well as handles GNC's namespace design such that the 
written file is correct?


In this case I'm trying to change the account GUID of one half of the 
split to a different GUID but only for transactions that match a very 
specific description text and have the old GUID as one of the two split 
accounts. I already know both the old and new GUIDs but this isn't a 
simple search and replace all the GUIDs that match because the account 
with the old GUID has transactions that should stay, hence doing XPath 
searching to filter down on the specific XML tree elements that match 
the criteria.

When I wrote out the XML using xml.etree it wrote namespaces like 
'xmlns:ns7', 'xmlns:ns8', etc. even though I had already registered the 
namespace at the beginning using what was originally in the GNC XML 
file. It did replace some of the namespace data, but not all of it 
leaving the 'ns*' names.