[Python-Dev] Status of PEP 3145 - Asynchronous I/O for subprocess.popen

[Antoine Pitrou]

On Fri, 28 Mar 2014 16:58:25 -0400
Terry Reedy <tjreedy at udel.edu> wrote:
> On 3/28/2014 6:20 AM, Victor Stinner wrote:
> 
> > Full example of asynchronous communication with a subprocess (the
> > python interactive interpreter) using asyncio high-level API:
> 
> Thank you for writing this. As I explained in response to Josiah, Idle 
> communicates with a python interpreter subprocess through a socket. 
> Since making the connection is not dependable, I would like to replace 
> the socket with the pipes. http://bugs.python.org/issue18823
> 
> However, the code below creates a subprocess for one command and one 
> response, which can apparently be done now with subprocess.communicate. 
> What I and others need is a continuing (non-blocking) conversion with 1 
> and only 1 subprocess (see my response to Josiah), and that is much more 
> difficult. So this code does not do what he claims his will do.

Why don't you use multiprocessing or concurrent.futures? They have
everything you need for continuous conversation between processes.

Regards

Antoine.