[Python-Dev] With context, please

[Phillip J. Eby]

At 09:25 AM 4/22/2006 -0700, Aahz wrote:
>     EXPRESSION returns a value that the with statement uses to create a
>     context (a special kind of namespace).  The context is used to
>     execute the BLOCK.  The block might end normally, get terminated by
>     a break or return, or raise an exception. No matter which of those
>     things happens, the context contains code to clean up after the
>     block.
>
>     The as NAME part is optional.  If you include it, you can use NAME
>     in your BLOCK
>
>Then a bit later:
>
>     The protocol used by the with statement is called the context
>     management protocol, and objects implementing it are context
>     managers.

Okay, which means that you agree with AMK and Paul Moore that the thing you 
pass to "with" is a context manager, and the thing that controls execution 
is a context.  Was that conclusion independently arrived at, or based on 
reading e.g. the docs I wrote?  Obviously, if you guys came up with that 
terminology on your own, that's a stronger vote in its favor.

Btw, the phrase "special kind of namespace" seems wrong to me, since there 
are no names in a context, and that phrase makes it sound like you get a 
new scope.  Looks to me like you could replace the word "namespace" with 
"object" without changing the intended effect.  (That is, I assume the 
intended effect was merely to point out you're introducing a new term that 
the reader is not yet expected to know.)