[Python-Dev] Simple generators, round 2

[Neil Schemenauer]

On Sun, Mar 25, 2001 at 12:07:20AM -0500, Tim Peters wrote:
> If you give me a coroutine program, and let me add a "control
> loop", ...

This is exactly what I started doing when I was trying to rewrite
your Coroutine.py module to use generators.

> A. Simple to implement in CPython without threads, and at least
>    possible likewise even for Jython.

I'm not sure about Jython.  The sys._getframe(), frame.suspend(),
and frame.resume() low level interface is nice.  I think Jython
must know which frames are going to be suspended at compile time.
That makes it hard to build higher level control abstractions.  I
don't know much about Jython though so maybe there's another way.
In any case it should be possible to use threads to implement
some common higher level interfaces.

  Neil