Thanks to Max and others, I have gotten closer to the final goal. My apologies to those who might be bored by the question... I have defined the Python Script "dsuJudgeSort" (with parameter jlist) as: decorated = [(o.getId()[-1], o.getId()[0]) for o in jlist] decorated.sort(); return [d[-1] for d in decorated] And a ZPT with <table tal:define="sorted_objects python:container['dsuJudgeSort'](here.objectValues('Plone Folder'));" > and get: TypeError: sequence index must be integer Suggestions or help are appreciated. Sean McLinden Allegheny County Health Department