New submission from Anil Kulkarni: Pickles created with python 3.4.X will not load with python 3.5.X if they include a collections.OrderedDict
To reproduce this issue, simply create a pickle of an OrderedDict on python 3.4.3 with protocol=2 and try to open it on 3.5. I have included a simple script to demonstrate this issue. I believe this is related to this bug: https://bugs.python.org/issue18473 As to the real-world implications: The python package Celery uses protocol=2 by default when serializing with pickle, and thus a celery web running 3.5 cannot receive the results of a worker running 3.4 For celery specifically, there is a workaround by setting the PICKLE_PROTOCOL environment variable, but this is a core python issue. P.S. This is the first bug I've filed with python so please let me know if there's something else I should be including. Thanks! ---------- files: b.py messages: 257524 nosy: anilredshift priority: normal severity: normal status: open title: Pickle protocol 2.0 not loading in python 3.5 type: behavior versions: Python 3.5 Added file: http://bugs.python.org/file41503/b.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue26013> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
