[Python-Dev] Accepting PEP 3154 for 3.4? (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Tue Nov 19 21:28:39 CET 2013

On Tue, 19 Nov 2013 21:25:34 +0100 "Martin v. Löwis" <martin at v.loewis.de> wrote:

Am 19.11.13 20:59, schrieb Antoine Pitrou: > That's integrated to the built-in buffering. It's not really an > additional constraint: the frame sizes simply dictate how buffering > happens in practice. The main point of framing is to simplify the > buffering logic (of course, the old buffering logic is still there for > protocols <= 3, unfortunately).

I wonder why this needs to be part of the pickle protocol at all, if it really is "below" the opcodes. Anybody desiring framing could just implement a framing version of the io.BufferedReader, which could be used on top of a socket connection (say) to allow fetching larger blocks from the network stack. This would then be transparent to the pickle implementation; the framing reader would, of course, provide the peek() operation to allow the unpickler to continue to use buffering. Such a framing BufferedReader might even be included in the standard library.

Well, unless you propose a patch before Saturday, I will happily ignore your proposal.

Regards

Antoine.

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