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To: python-list@python.org
From: Dennis Lee Bieber <wlfraed@ix.netcom.com>
Subject: Re: How to check for threads being finished?
Date: Fri, 05 Jul 2013 16:13:48 -0400
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Xref: csiph.com comp.lang.python:50018

On 05 Jul 2013 16:59:54 GMT, Steven D'Aprano
<steve+comp.lang.python@pearwood.info> declaimed the following:

>I have a pool of worker threads, created like this:
>
>threads = [MyThread(*args) for i in range(numthreads)]
>for t in threads:
>    t.start()
>
>
>I then block until the threads are all done:
>
>while any(t.isAlive() for t in threads):
>    pass
>
>
>Is that the right way to wait for the threads to be done? Should I stick 
>a call to time.sleep() inside the while loop? If so, how long should I 
>sleep? That's probably an unanswerable question, but some guidelines on 
>choosing the sleep time will be appreciated.

	If you are just going to wait for them to finish, and never use them
again...

for t in threads:
	t.join()

	Doesn't matter which thread ends first, this operation will either
block if the thread hasn't finished or cycle to the next thread if it has.
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/