Dear python-dev *and* python-ideas, I am posting PEP 3156 here for early review and discussion. As you can see from the liberally sprinkled TBD entries it is not done, but I am about to disappear on vacation for a few weeks and I am reasonably happy with the state of things so far. (Of course feedback may change this. :-) Also, there has already been some discussion on python-ideas (and even on Twitter) so I don't want python-dev to feel out of the loop -- this *is* a proposal for a new standard library module. (But no, I haven't picked the module name yet. :-) There's an -- also incomplete -- reference implementation at http://code.google.com/p/tulip/ -- unlike the first version of tulip, this version actually has (some) unittests. Let the bikeshedding begin! (Oh, happy holidays too. :-) -- --Guido van Rossum (python.org/~guido)