Collecting tracebacks is the sort of plumbing you would expect a 'batteries included' library to do. I didn't expect the workers to receive the ctrl-C, I'd expe

Collecting tracebacks is the sort of plumbing you would expect a 'batteries included' library to do. I didn't expect the workers to receive the ctrl-C, I'd expect the main process to terminate, along with its children; none of that happens. I think it's clear that these sorts of details belong in the library. Everybody could hack together their own traceback collector, segfault handlers etc., but it's difficult to get right and in a scripting language you should be able to forget about such things.