我知道之前已经回答过这个问题，但似乎直接执行脚本“python filename.py”不起作用。我在 SuSE Linux 上安装了 Python 2.6.2。
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])
命令行：
> 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'
重构您的代码，以便f()函数是在创建 Pool 实例之前定义的。否则工人看不到你的功能。
#!/usr/bin/python
# -*- coding: utf-8 -*-
from multiprocessing import Pool
def f(x):
return x*x
p = Pool(1)
p.map(f, [1, 2, 3])
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