Antoine Pitrou <pitrou@free.fr> added the comment: Well, I think it deserves a comment in the documentation that behaviour of Pipes and Queues when one of the process terminates is undefined and implementation-dependent. By the way, there's internal support in 3.3 to reliably detect killed children, and it's used by concurrent.futures: http://docs.python.org/dev/library/concurrent.futures.html#concurrent.future.... However, I'm not sure there's an easy way to detect a killed master process from one of the worker processes. ---------- assignee: -> docs@python components: +Documentation nosy: +docs@python resolution: invalid -> stage: committed/rejected -> needs patch status: closed -> open versions: +Python 3.2, Python 3.3 _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue12488> _______________________________________