[ python-Bugs-847665 ] XMLGenerator.startElementNS dies on EMPTY_NAMESPACE attribut

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Bugs item #847665, was opened at 2003-11-24 02:21
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https://sourceforge.net/tracker/?func=detail&atid=105470&aid=847665&group_id=5470

Category: XML
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Stuart Bishop (zenzen)
Assigned to: Nobody/Anonymous (nobody)
Summary: XMLGenerator.startElementNS dies on EMPTY_NAMESPACE attribut

Initial Comment:
from xml.sax.saxutils import XMLGenerator

g = XMLGenerator(encoding='utf8')
STREAM_NAMESPACE = 'http://etherx.jabber.org/streams'
CLIENT_NAMESPACE = 'jabber:client'
g.startDocument()
g.startPrefixMapping('stream', STREAM_NAMESPACE)
g.startPrefixMapping('client', CLIENT_NAMESPACE)
g.startElementNS( 
    (STREAM_NAMESPACE, 'stream'), 'stream',
    {(None,'xmlns'): CLIENT_NAMESPACE}
    )

Dies with:
Traceback (most recent call last):
  File "tst.py", line 11, in ?
    g.startElementNS( 
  File "/System/Library/Frameworks/Python.framework/
Versions/2.3/lib/python2.3/xml/sax/saxutils.py", line 124, in 
startElementNS
    name = self._current_context[name[0]] + ":" + name[1]
KeyError: 'x'


Changing the end of XMLGenerator.startElementNS to the 
following makes it work the way I expect:

        for (name, value) in attrs.items():
            if name[0] is None:
                name = name[1]
            else:
                name = self._current_context[name[0]] + ":" + 
name[1]
            self._out.write(' %s=%s' % (name, 
quoteattr(value)))
        self._out.write('>')


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