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Created on 2015-07-20 22:23 by Erick Fonseca, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Messages (3) | |||
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| msg247006 - (view) | Author: Erick Fonseca (Erick Fonseca) | Date: 2015-07-20 22:23 | |
cPickle raises a PicklingError when trying to pickle an instance of a class defined in a module being profiled with cProfile.
Example code:
import cPickle
class A(object):
pass
a = A()
with open('file.dat', 'wb') as f:
cPickle.dump(a, f)
Running the above example with python -m cProfile resulted in
cPickle.PicklingError: Can't pickle <class '__main__.A'>: attribute lookup __main__.A failed
I'm not sure if this is the intended behavior (I suppose __main__ in this case refers to the cProfile module file), but I googled it and couldn't find anything. I noticed this problem in Ubuntu 14.04 and Windows 8.1, both with Python 2.7.
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| msg247010 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) *  |
Date: 2015-07-21 02:53 | |
The same is with profile, pickle and in 3.x. May be profile should set sys.modules['__main__']? |
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| msg247013 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2015-07-21 05:52 | |
This looks as duplicate of issue9914. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:19 | admin | set | github: 68864 |
| 2015-07-21 05:52:20 | serhiy.storchaka | set | status: open -> closed superseder: trace/profile conflict with the use of sys.modules[__name__] resolution: duplicate messages: + msg247013 |
| 2015-07-21 02:53:31 | serhiy.storchaka | set | versions:
+ Python 3.4, Python 3.5, Python 3.6 nosy: + georg.brandl, serhiy.storchaka messages: + msg247010 components: + Library (Lib), - Extension Modules type: crash -> behavior |
| 2015-07-20 22:23:56 | Erick Fonseca | create | |