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Groups > comp.lang.python > #16202

Strange result ffor object to bool

Date 2011-11-25 14:52 +0800
Subject Strange result ffor object to bool
From ZhouPeng <zpengxen@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.3026.1322203948.27778.python-list@python.org> (permalink)

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Hi all,

In my program, I get a listen element by
listen = graphics.find("listen")

print listen is <Element listen at 6afc20>
print type listen is <type 'instance'>
I am sure listen is not None and can be accessed properly.

But print bool(listen) is False
if not listen  is True

-- 
Zhou Peng

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Strange result ffor object to bool ZhouPeng <zpengxen@gmail.com> - 2011-11-25 14:52 +0800
  Re: Strange result ffor object to bool Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-25 08:59 +0000

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