Python deadlock using subprocess.popen and communicate

[Roy Smith]

In article <mailman.1343.1316663531.27778.python-list at python.org>,
 Chris Rebert <clp2 at rebertia.com> wrote:

> Popen.poll():
>     Check if child process has terminated. Set **and return**
> returncode attribute.
> [Direct quote from the docs; emphasis added]

Doh.  I read right past that and didn't see it.  Thanks for the 
correction.