multiprocessing Pool.imap broken?

[eryksun ()]

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'