There is following simple code:
from multiprocessing import Process, freeze_support
def foo():
print 'hello'
if __name__ == '__main__':
freeze_support()
p = Process(target=foo)
p.start()
It works good on Linux or Windows with Python 3.3, but fails on Windows with Python 2.7.
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "c:\Python27\lib\multiprocessing\forking.py", line 346, in main
prepare(preparation_data)
File "c:\Python27\lib\multiprocessing\forking.py", line 454, in prepare
assert main_name not in sys.modules, main_name
AssertionError: thread
Generally speaking, all multiprocessing examples i tried fail on that setup. Why?
This is a known bug:
http://bugs.python.org/issue10845
Not sure if this will ever get ported to 2.7.X.
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