Reading XML namespaces

[Adam Tauno Williams]

Say I have an XML document that begins with:

<?xml version="1.0" encoding="utf-8"?>
<dsml:dsml xmlns:dsml="http://www.dsml.org/DSML">
...

How can one access the namespaces define in this node?  I've done a fair
amount of XML in Python, but haven't been able to uncover the call to
enumerate the namespaces.

Primarily I am using etree from lxml.
-- 
Adam Tauno Williams <awilliam at whitemice.org> LPIC-1, Novell CLA
<http://www.whitemiceconsulting.com>
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