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From: Dennis Lee Bieber <wlfraed@ix.netcom.com>
Newsgroups: comp.lang.python
Subject: Re: Effects of caching frequently used objects, was Re: Explaining  names  vs variables  in Python
Date: Wed, 02 Mar 2016 09:16:31 -0500
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On Wed, 02 Mar 2016 10:12:48 +0100, Peter Otten <__peter__@web.de>
declaimed the following:


>You should not bother with object identity for objects other than None.

	It's useful for deliberately created sentinel objects.

ENDDATA = object()
...
#some thread starts that puts stuff onto a queue, and puts
#ENDDATA on the queue when it is finished

while True:
	data = q.get()
	if data is ENDDATA: break
	#do stuff

-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/