yet another confusion with multiprocessing error, 'module' object has no attribute 'f'
- by gatoatigrado
I know this has been answered before, but it seems that executing the script directly "python filename.py" does not work. I have Python 2.6.2 on SuSE Linux.
Code:
#!/usr/bin/python
# -*- coding: utf-8 -*-
from multiprocessing import Pool
p = Pool(1)
def f(x):
return x*x
p.map(f, [1, 2, 3])
Command line:
> python example.py
Process PoolWorker-1:
Traceback (most recent call last):
File "/usr/lib/python2.6/multiprocessing/process.py", line 231, in _bootstrap
self.run()
File "/usr/lib/python2.6/multiprocessing/process.py", line 88, in run
self._target(*self._args, **self._kwargs)
File "/usr/lib/python2.6/multiprocessing/pool.py", line 57, in worker
task = get()
File "/usr/lib/python2.6/multiprocessing/queues.py", line 339, in get
return recv()
AttributeError: 'module' object has no attribute 'f'
