En Sun, 20 Jun 2010 09:43:09 -0300, hywhy <hy...@live.com> escribió:
from multiprocessing.managers import BaseManager
import Queue
class CrawlerManager(BaseManager):
pass
downloader_queue = Queue.Queue()
downloader_queue.put('hello')
CrawlerManager.register('get_downloader_queue', callable=lambda:
downloader_queue)
mgr = CrawlerManager()
mgr.start()
q = mgr.get_downloader_queue()
error:
pickle.PicklingError: Can't pickle <function <lambda> at 0x00C02F70>:
it's
not found as __parents_main__.<lambda>
Multiprocessing uses pickle to transfer data between processes. You can't
pickle a lambda expression - functions must have a name and be available
at the outermost module level. (See "Programming guidelines" in the
multiprocessing documentation, and the pickle module)
But you can't share a Queue object - use the multiprocessing one (see
"Exchanging data between processes").
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
