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From: Laura Creighton <lac@openend.se>
Subject: Re: error while installing using pip.
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Comments: In-reply-to Mark Lawrence <breamoreboy@yahoo.co.uk> message dated "Sun, 20 Sep 2015 21:27:47 +0100."
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Date: Sun, 20 Sep 2015 22:42:59 +0200
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Xref: csiph.com comp.lang.python:96899

There is an atfork patch supplied as part of this issue
https://bugs.python.org/issue16500

Maybe it can do what you want?

Laura