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comp / comp.lang.python / Getting a Process.start() error pickle.PicklingError: Can't pickle <type 'module'>: it's not found as __builtin__.module with Python 2.7

SubjectAuthor
* Getting a Process.start() error pickle.PicklingError: Can't picklemarc nicole
`- Re: PicklingErrorStefan Ram

1
Subject: Getting a Process.start() error pickle.PicklingError: Can't pickle <type 'module'>: it's not found as __builtin__.module with Python 2.7
From: marc nicole
Newsgroups: comp.lang.python
Date: Mon, 2 Sep 2024 14:00 UTC
References: 1
Path: eternal-september.org!news.eternal-september.org!feeder3.eternal-september.org!fu-berlin.de!uni-berlin.de!not-for-mail
From: mk1853387@gmail.com (marc nicole)
Newsgroups: comp.lang.python
Subject: Getting a Process.start() error pickle.PicklingError: Can't pickle
<type 'module'>: it's not found as __builtin__.module with Python 2.7
Date: Mon, 2 Sep 2024 16:00:15 +0200
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Hello,

I am using Python 2.7 on Windows 10 and I want to launch a process
independently of the rest of the code so that the execution continues while
the started process proceeds. I am using Process().start() from Python 2.7
as follows:

from multiprocessing import Process
def do_something(text):
print(text)
if __name__ == "__main__":
q = Process(target=do_something,args=("somecmd") )
q.start()
# following code should execute right after the q.start() call (not
until it returns)
.....

But getting the error at the call of Process().start():
pickle.PicklingError: Can't pickle <type 'module'>: it's not found as
__builtin__.module

anybody could provide an alternative to call the function do_something() in
a separate thread ?

Subject: Re: PicklingError
From: Stefan Ram
Newsgroups: comp.lang.python
Organization: Stefan Ram
Date: Mon, 2 Sep 2024 20:29 UTC
References: 1
Path: eternal-september.org!news.eternal-september.org!feeder3.eternal-september.org!fu-berlin.de!uni-berlin.de!not-for-mail
From: ram@zedat.fu-berlin.de (Stefan Ram)
Newsgroups: comp.lang.python
Subject: Re: PicklingError
Date: 2 Sep 2024 20:29:36 GMT
Organization: Stefan Ram
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marc nicole <mk1853387@gmail.com> wrote or quoted:
>But getting the error at the call of Process().start():
>pickle.PicklingError: Can't pickle <type 'module'>: it's not found as
>__builtin__.module

I'm not exactly dialed in on Python 2, but threading might be
less of a headache when it comes to pickling and could still
check the box for parallelism.

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