[Python-Dev] Support for async read/write

[Antoine Pitrou]

Le mercredi 20 octobre 2010 à 00:48 +0200, "Martin v. Löwis" a écrit :
> > Also, the canonical way to do file I/O in Python 3 is the `io` lib,
> > therefore it would be a bit of a shame to have separate, non-integrated
> > `aio_*` functions.
> 
> I disagree. We also have posix.open, posix.dup, etc. We always expose
> POSIX functions in the posix module (except for the socket functions,
> unfortunately, and a few other exceptions), and I see no reason to break
> with this tradition. The io module should be thought of as sitting
> on top of the posix module (and it initially was).

I'm not suggesting to break with any "tradition", but that building
duplicate APIs to do file I/O has little value and only makes things
more cumbersome.

> > Also, since the `io` lib is already supposed to support non-blocking
> > IO, perhaps it would be valuable to stress this support and propose any
> > interesting patches for fixing and/or improving it.
> 
> I think that's entirely independent.

I don't think it is. If the goal is to give ways to improve file I/O
performance for specialized use cases, then it certainly deserves
integration with the current I/O stack. If the goal is not that, then I
don't really know what it is.

It would be nice to know about the use case Jesus has in mind.

Regards

Antoine.