Issue #23051: multiprocessing.Pool methods imap() and imap_unordered( now handle exceptions raised by an iterator.
Issue #23051: multiprocessing.Pool methods imap() and imap_unordered(
now handle exceptions raised by an iterator.

Patch by Alon Diamant and Davin Potts.

pombredanne/billiard,pombredanne/billiard,jakirkham/billiard,jakirkham/billiard