Author Erick Fonseca
Recipients Erick Fonseca
Date 2015-07-20.22:23:56
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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):

    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.
Date User Action Args
2015-07-20 22:23:56Erick Fonsecasetrecipients: + Erick Fonseca
2015-07-20 22:23:56Erick Fonsecasetmessageid: <>
2015-07-20 22:23:56Erick Fonsecalinkissue24676 messages
2015-07-20 22:23:56Erick Fonsecacreate