On Fri, Mar 16, 2012 at 9:20 AM, Tres Seaver <tsea...@palladion.com> wrote: > On 03/16/2012 10:57 AM, Guido van Rossum wrote: >> On Thu, Mar 15, 2012 at 9:48 PM, Tres Seaver <tsea...@palladion.com> >> wrote: >>> On 03/13/2012 06:49 PM, Nick Coghlan wrote: >>>> On Wed, Mar 14, 2012 at 8:08 AM, Guido van Rossum >>>> <gu...@python.org> wrote: >>>>> If you can solve your problem with a suitably hacked Unpickler >>>>> subclass that's fine with me, but I would personally use this >>>>> opportunity to change the app to some other serialization >>>>> format that is perhaps less general but more robust than pickle. >>>>> I've been bitten by too many pickle-related problems to >>>>> recommend pickle to anyone... >>>> >>>> It's fine for in-memory storage of (almost) arbitrary objects (I >>>> use it to stash things in a memory backed sqlite DB via >>>> SQLAlchemy) and for IPC, but yeah, for long-term cross-version >>>> persistent storage, I'd be looking to something like JSON rather >>>> than pickle. >>> >>> Note the Zope ecosystem (including Plone) is an *enoromous* >>> installed base[1] using pickle for storage of data over many years >>> and multiple versions of Python: until this point, it has always >>> been possible to arrange for old pickles to work (e.g., by providing >>> aliases for missing module names, etc.). >>> >>> ]1] tens of thousands of Zope-based sites in production, including >>> very high-profile ones: http://plone.org/support/sites >> >> Don't I know it. :-) >> >> So do you need any help porting to Python 3 or not? The OP didn't >> mention Zope. > > ZODB is actually the biggest / most important non-ported items in the > Zope ecosystem. We are close to a pure-Python version of persistent and > it's pickle cache, and have some work done toward pure-Python BTrees.
I take that as meaning "no, we don't need help, it's all under control." -- --Guido van Rossum (python.org/~guido) _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
