[Python-Dev] PEP 343 and with (original) (raw)

Michael Hudson mwh at python.net
Tue Oct 4 10:50:16 CEST 2005

"Phillip J. Eby" <pje at telecommunity.com> writes:

At 07:02 PM 10/3/2005 +0100, Michael Hudson wrote:

"Phillip J. Eby" <pje at telecommunity.com> writes:

> Since the PEP is accepted and has patches for both its implementation and a > good part of its documentation, a major change like this would certainly > need a better rationale. Though given the amount of interest said patch has attracted (none at all) Actually, I have been reading the patch and meant to comment on it.

Oh, good.

I was perplexed by the odd stack behavior of the new opcode until I realized that it's try/finally that's weird. :)

:)

I was planning to look into whether that could be cleaned up as well, when I got distracted and didn't go back to it.

I see.

I don't know whether trying to clean up the stack protocol around exceptions is worth the about of pain it causes in the head (anyone still thinking about removing the block stack?).

perhaps noone cares very much and the proposal should be dropped. I care an awful lot, as 'with' is another framework-dissolving tool that makes it possible to do more things in library form, without needing to resort to template methods. It also enables more context-sensitive programming, in that "global" states can be set and restored in a structured fashion. It may take a while to feel the effects, but it's going to be a big improvement to Python, maybe as big as new-style classes, and certainly bigger than decorators.

I think 'as big as new-style classes' is probably an exaggeration, but I'm glad my troll caught a few people :)

Cheers, mwh

-- Those who have deviant punctuation desires should take care of their own perverted needs. -- Erik Naggum, comp.lang.lisp

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