R. David Murray added the comment: Oops. I merged the patch without coming back here first :(. Still getting used to the new workflow. It turns out that format has a parameter, monetary, that isn't supported by format_string. So what we did was add that parameter to format_string and deprecate format. If there is objection to this solution I will revert the merge. ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue10379> _______________________________________