[issue3151] elementtree serialization bug for weird namespace urls

[robert forkel]

New submission from robert forkel <xrotwang at googlemail.com>:

when serializing elementtrees with weird namespaces like {$stuff}, the
generated xml is not valid:

Python 2.5.1 (r251:54863, Mar  7 2008, 04:10:12)
[GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2

IDLE 1.2.1      ==== No Subprocess ====
>>> from xml.etree import ElementTree as et
>>> e = et.fromstring('<prefix:localname xmlns:prefix="${stuff}"/>')
>>> e.tag
'{${stuff}}localname'
>>> t = et.ElementTree(e)
>>> from StringIO import StringIO
>>> f = StringIO()
>>> t.write(f)
>>> f.seek(0)
>>> print f.read()
<ns0:}localname xmlns:ns0="${stuff" />

----------
components: Library (Lib)
messages: 68463
nosy: xrotwang
severity: normal
status: open
title: elementtree serialization bug for weird namespace urls
type: behavior
versions: Python 2.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3151>
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