Fellows, I'm having problems understanding an issue with passing function as parameters.
I'm sending some functions to the multiprocessing module (python 2.5 with the proper backport). I'm iterating on a list of functions, however it seems that only the last function implementation is used for all the subprocesses. Here's a code that triggers the issue: import multiprocessing def f1(): print 'I am f1' def f2(foo): print 'I am f2 %s' % foo workers = [ (f1,tuple()), (f2,(5,)), ] procs=[] for func, parameters in workers: # here it should be decorated, but for this example to be kept simple, the function is only wrapped, doing nothing special def subproc(*args, **kwargs): return func(*args, **kwargs) procs.append(multiprocessing.Process(target=subproc, args=parameters)) for proc in procs: proc.start() for proc in procs: proc.join() Here's the result: > run test.py Process Process-1: Traceback (most recent call last): File "/usr/lib/python2.5/site-packages/multiprocessing-2.6.2.1-py2.5-linux-i686.egg/multiprocessing/process.py", line 237, in _bootstrap self.run() File "/usr/lib/python2.5/site-packages/multiprocessing-2.6.2.1-py2.5-linux-i686.egg/multiprocessing/process.py", line 93, in run self._target(*self._args, **self._kwargs) File "test.py", line 17, in subproc return func(*args, **kwargs) TypeError: f2() takes exactly 1 argument (0 given) I am f2 5 It looks like the first subprocess is called with f2 instead of f1. Any idea ? JM -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -- http://mail.python.org/mailman/listinfo/python-list