[Python-Dev] The memo of pickle

M.-A. Lemburg mal@lemburg.com
Wed, 07 Aug 2002 09:38:59 +0200

Martin v. Loewis wrote:
> Guido van Rossum <guido@python.org> writes:
>>Is it worth it?  
> If you believe that the problem is real, yes.

I think that the tuple is not the problem here, it's the
fact that so many objects are recorded in the memo to
later rebuild recursive structures.

Now, I believe that recursive structures in pickles are
not very common, so the memo is mostly useless in these

Perhaps pickle could grow an option to assume that a
data structure is non-recursive ?! In that case, no
data would be written to the memo (or only the id()
mapped to 1 to double-check).

Marc-Andre Lemburg
CEO eGenix.com Software GmbH
eGenix.com -- Makers of the Python mx Extensions: mxDateTime,mxODBC,...
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