Chris Jerdonek added the comment: One option for whitelisting files would be to subclass doctest.DocTestParser and pass an instance as the parser argument to doctest.DocFileSuite: http://docs.python.org/dev/library/doctest.html#doctest.DocFileSuite The custom parser could look for the per-file marker before falling back to the usual parsing logic. This would give us the functionality we need without having to make changes to doctest. ---------- _______________________________________ Python tracker <report at bugs.python.org> <http://bugs.python.org/issue15629> _______________________________________