[Python-Dev] PEP 3154 - pickle protocol 4

[Nick Coghlan]

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