[docs] [issue9196] Improve docs for string interpolation "%s" re Unicode strings

Craig McQueen <python@craig.mcqueen.id.au> added the comment: I should be able to attach my test code. But it is at my work, and I'm on holidays for 2 more weeks. Sorry 'bout that! I do assume that Python 3 greatly simplifies this. ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue9196> _______________________________________