The problem was that Pool shuts down from its finalizer: http://stackoverflow.com/questions/5481104/multiprocessing-pool-imap-broken/5481610#5481610
On Wed, Mar 30, 2011 at 5:59 AM, eryksun () <eryk...@gmail.com> wrote: > On Tuesday, March 29, 2011 9:44:21 PM UTC-4, Yang Zhang wrote: >> I've tried both the multiprocessing included in the python2.6 Ubuntu >> package (__version__ says 0.70a1) and the latest from PyPI (2.6.2.1). >> In both cases I don't know how to use imap correctly - it causes the >> entire interpreter to stop responding to ctrl-C's. Any hints? Thanks >> in advance. >> >> $ python >> Python 2.6.5 (r265:79063, Apr 16 2010, 13:57:41) >> [GCC 4.4.3] on linux2 >> Type "help", "copyright", "credits" or "license" for more information. >> >>> import multiprocessing as mp >> >>> mp.Pool(1).map(abs, range(3)) >> [0, 1, 2] >> >>> list(mp.Pool(1).imap(abs, range(3))) >> ^C^C^C^C^\Quit > > It works fine for me on Win32 Python 2.7.1 with multiprocessing 0.70a1. So > it's probably an issue with the implementation on Linux. > > Python 2.7.1 (r271:86832, Nov 27 2010, 18:30:46) > [MSC v.1500 32 bit (Intel)] on win32 > Type "help", "copyright", "credits" or "license" for more information. >>>> import multiprocessing as mp >>>> list(mp.Pool(1).imap(abs, range(3))) > [0, 1, 2] >>>> mp.__version__ > '0.70a1' > -- > http://mail.python.org/mailman/listinfo/python-list > -- Yang Zhang http://yz.mit.edu/ -- http://mail.python.org/mailman/listinfo/python-list
