Subprocess does not return for longer-running process

[Lawrence D'Oliveiro]

In message <pan.2010.09.23.17.17.56.906000 at nowhere.com>, Nobody wrote:

> On Thu, 23 Sep 2010 12:25:53 +1200, Lawrence D'Oliveiro wrote:
> 
>>> And I can't think of any reason why you should use os.waitpid() or
>>> similar; use the .wait() method.
>> 
>> I have used WNOHANG to poll for completion of a subprocess while
>> providing progress updates to the user.
> 
> This can be done via the .poll() method.

And what do you think the poll method uses?