[Python-Dev] PEP 3154 - pickle protocol 4 (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Tue Aug 16 00:37:11 CEST 2011

On Tue, Aug 16, 2011 at 5:56 AM, Alexandre Vassalotti <alexandre at peadrop.com> wrote:

On Fri, Aug 12, 2011 at 3:58 AM, Antoine Pitrou <solipsis at pitrou.net> wrote:

Hello, This PEP is an attempt to foster a number of small incremental improvements in a future pickle protocol version. The PEP process is used in order to gather as many improvements as possible, because the introduction of a new protocol version should be a rare occurrence. Feel free to suggest any additions. Your propositions sound all good to me. We will need to agree about the details, but I believe these improvements to the current protocol will be appreciated. Also, one thing keeps coming back is the need for pickling functions and methods which are not part of the global namespace (e.g. issue 9276). Support for this would likely help us fixing another related namespace issue (i.e., issue 3657). Finally, we currently missing support for pickling classes with new taking keyword-only arguments (i.e. issue 4727).

In the spirit of PEP 395 and python 3's pickle._compat_pickle, perhaps it would be worth looking at a mechanism whereby a pickle could specify "alternate class names" for included class instances in the pickle itself?

Cheers, Nick.

-- Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia

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