Start and control an extern program

[Josiah Carlson]

> It wouldn't be portable to versions of Python that don't have threads, 
> one would suppose.
> 
> Have you encountered such?  Frequently?

The only platform I've run into that doesn't support threads is Cygwin 
(a couple years back).  I don't know if modern Python + Cygwin supports 
threads, so it may be worth checking.

On the other hand, every version of Python I've used on linux since mid 
2001 (Python 2.0 on linux kernel 2.4.x) has supported threads.

  - Josiah