lxml etree question

[Stefan Behnel]

Jim, 26.12.2010 00:32:
> On Dec 25, 5:33 am, Stefan Behnel wrote:
>> lxml knows about this special case, so you can write
>>
>>          {http://www.w3.org/XML/1998/namespace}lang
>>
>> and lxml will take care of using the right prefix.
>
> Stefan, thank you for the software, which has helped me a great deal.
>
> I tried that exact thing, among a number of others, and it didn't work
> for me (I got ns0).

Works for me, at least with a recent SVN version:

   Python 2.7.1rc1+ (trunk:86636, Nov 21 2010, 09:18:37)
   [GCC 4.4.3] on linux2
   Type "help", "copyright", "credits" or "license" for more information.
   >>> import lxml.etree as ET
   >>> el = ET.Element('test',
   ...    {'{http://www.w3.org/XML/1998/namespace}lang': 'de'})
   >>> ET.tostring(el)
   '<test xml:lang="de"/>'

Anyway, I applied a patch that makes sure it will always use the 'xml' 
prefix for this namespace. Will be in 2.3 final.

Stefan