fiete added the comment: Since the only thing I know about the multiprocessing internals is what I just read in the source code trying to debug my imap_unordered call, I'll add the following example, not knowing whether this is already covered by everything you have until now.
import multiprocessing.pool def gen(): raise Exception('generator exception') yield 1 yield 2 for i in range(3): with multiprocessing.pool.ThreadPool(3) as pool: try: print(list(pool.imap_unordered(lambda x: x*2, gen()))) except Exception as e: print(e) This only prints 'generator exception' once for the first iteration. For the following iterations imap_unordered returns an empty list. This is the case for both Pool and ThreadPool. ---------- nosy: +fiete _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue28699> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com