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Groups > comp.lang.python > #18835

Re: contextlib.contextmanager and try/finally

From Neil Cerutti <neilc@norwich.edu>
Newsgroups comp.lang.python
Subject Re: contextlib.contextmanager and try/finally
Date 2012-01-11 16:46 +0000
Organization Norwich University
Message-ID <9n5smpFm0dU1@mid.individual.net> (permalink)
References <10841855.1646.1326296715536.JavaMail.geo-discussion-forums@yqiz15>

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On 2012-01-11, johannh@gmail.com <johannh@gmail.com> wrote:
> That suggests that I cannot rely on the
> contextlib.contextmanager decorator to ensure that the
> connection is closed and would have to write my own object with
> __enter__ and __exit__ methods to guarantee this.

contextmanager wraps your generator in an object with __enter__
and __exit__ methods for you.

-- 
Neil Cerutti

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Thread

contextlib.contextmanager and try/finally johannh@gmail.com - 2012-01-11 07:45 -0800
  Re: contextlib.contextmanager and try/finally Neil Cerutti <neilc@norwich.edu> - 2012-01-11 16:46 +0000
  Re: contextlib.contextmanager and try/finally Robert Kern <robert.kern@gmail.com> - 2012-01-11 17:14 +0000
  Re: contextlib.contextmanager and try/finally Ian Kelly <ian.g.kelly@gmail.com> - 2012-01-11 10:20 -0700
    Re: contextlib.contextmanager and try/finally johannh@gmail.com - 2012-01-11 09:30 -0800
    Re: contextlib.contextmanager and try/finally johannh@gmail.com - 2012-01-11 09:30 -0800
  RE: contextlib.contextmanager and try/finally "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2012-01-31 21:07 +0000
  RE: contextlib.contextmanager and try/finally Peter Otten <__peter__@web.de> - 2012-01-31 23:02 +0100
  Re: contextlib.contextmanager and try/finally Ian Kelly <ian.g.kelly@gmail.com> - 2012-01-31 15:09 -0700
    Re: contextlib.contextmanager and try/finally Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-01 02:15 +0000

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