Is it just me or something seriously wrong with the new Python futures module on windows

Question

I am on Windows XP and am having problems with the new Python 3.2 futures module. I can't seem to get ProcessPoolExecutor to work. Session Example:

Python 3.2 (r32:88445, Feb 20 2011, 21:29:02) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> from concurrent import futures >>> executor = futures.ProcessPoolExecutor() >>> def pio(x): ... print("I AM HERE") ... return True ... >>> fut = executor.submit(pio, 5) >>> Process Process-1: Traceback (most recent call last): File "C:\Python32\lib\multiprocessing\process.py", line 259, in _bootstrap self.run() File "C:\Python32\lib\multiprocessing\process.py", line 114, in run self._target(*self._args, **self._kwargs) File "C:\Python32\lib\concurrent\futures\process.py", line 133, in _process_worker call_item = call_queue.get(block=True, timeout=0.1) File "C:\Python32\lib\multiprocessing\queues.py", line 131, in get res = self._recv() AttributeError: 'module' object has no attribute 'pio' >>> fut.running() True 

Something seems to be wrong here. Help!

Answer 1

You should know that the concurrent.future module uses multiprocessing (especially when you used the ProcessPoolExecutor ), so some functions will not work in the interactive interpreter, read more in Note .