[Qgis-developer] python multiprocessing error in QGis (Windows)

[Saverio Rutigliano]

Hi all,
I have this error when I try to use Manager() from python multiprocessing
library.
(Just start QGIS open Python console and execute the two following lines)

>>> import multiprocessing

>>> mgr = multiprocessing.Manager()

Traceback (most recent call last):

File "<input>", line 1, in <module>

File "C:\DEV\osgeo4w_dev\apps\Python27\lib\multiprocessing\__init__.py",
line 99, in Manager

m.start()

File "C:\DEV\osgeo4w_dev\apps\Python27\lib\multiprocessing\managers.py",
line 524, in start

self._process.start()

File "C:\DEV\osgeo4w_dev\apps\Python27\lib\multiprocessing\process.py",
line 130, in start

self._popen = Popen(self)

File "C:\DEV\osgeo4w_dev\apps\Python27\lib\multiprocessing\forking.py",
line 252, in __init__

cmd = get_command_line() + [rhandle]

File "C:\DEV\osgeo4w_dev\apps\Python27\lib\multiprocessing\forking.py",
line 339, in get_command_line

if process.current_process()._identity==() and is_forking(sys.argv):

AttributeError: 'module' object has no attribute 'argv'

>>>


It happens in both 1.8 and 1.9 dev version on Windows X. Of course
everything is ok using QGIS on Linux!... :P


It seems something related to the main Python/QGis process startup and the
way the library tries to start a new process.... but I can't figure out any
workaround.


Any idea?


Saverio
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