Message 100903 - Python tracker
One more thing: given that many web-frameworks are still not available for Py3 at this time, and that there are still tons of third-party libraries missing on that platform, I would be surprised if there was any ElementTree based XML/HTML processing code written specifically and only for Py3 by now. So I cannot imagine any noticeable body of code being available that relies on this new Py3 feature.