network library" <gevent@googlegroups.com>
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Date: Mon, 12 Nov 2012 11:46:55 +0100
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Subject: Re: [gevent] Why "if sys is None" all over the place in gevent.threadpool?
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vitaly wrote:
> Just trying to learn the tricks of the masters: I noticed a number of 
> "if sys is None: return" blocks in gevent.threadpool. Why would sys 
> become None?
>
> Many thanks,
> Vitaly

I believe that's the case on interpreter shutdown.