Stefan Behnel added the comment: If runtime checks are needed to prevent mixing arbitrary objects into the tree, then I don't think they should be considered too costly.
I agree with Florent that this is worth reopening. It doesn't look like a "Tests" bug to me rather a "Lib"/"XML" bug. ---------- nosy: +scoder _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue15075> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com