Anil Kulkarni added the comment: Hi Serhiy,
I have done some more investigation this morning and I have come across two distinct issues. The first is that pickles (specifically the pickle in my earlier message) created in python 3.0->3.4.3 do not load on python 2.7.10. The exception is 3.5.1, which produces a pickle that DOES load on 2.7.10 This is unfortunate but not a regression The second issue is that pickles created by python 3.0->3.4.3 do NOT load in python 3.5 This is a regression, in the sense that the pickle created by 3.0->3.4.3 is compatible with every other version of python (I haven't tested every single combination here, but several) >From the language perspective, it may be that 3.4.X has incorrect code, but >from a compatibility perspective, 3.5 is breaking the promise that pickles are >compatible across versions of python. I write this as justification that python 3.5 should fix this regression in compatibility with 3.0 -> 3.4.3. At the very least 3.5 should have a shim behavior to fallback and allow it to import these pickles correctly. Thanks, Anil ---------- _______________________________________ 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
