[issue18850] xml.etree.ElementTree accepts control chars.

[Stefan Behnel]

Stefan Behnel added the comment:

This is a bit tricky in ET because it generally allows you to stick anything into the Element properties (and that's a feature). So catching this at tree building time (as lxml.etree does) isn't really possible.

However, at least catching it in the serialiser should be possible and would help. Regexes for well-formed tag names and text could do the job.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18850>
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