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Wed May 11 06:55:12 CEST 2005 · https://mail.python.org/pipermail/python-dev/2005-May/053620.html

Greg Ewing wrote:

> Nick Coghlan wrote:
>> Hmm, with that approach, a code inspection tool like pychecker could
>> be used to pick up the slack, and flag generators which have a yield
>> inside a try/finally or a user defined statement without applying
>> the "needs finalisation" decorator 
> 
> What about giving them an __exit__ method if and only
> if they have a yield inside a try/finally? Old generators
> won't be doing that, because it's currently illegal.

It's possible to create a generator that does not contain a finally, but
still needs cleanup.

    def gen():
        try:
            yield
        except:
            print 'cleanup'
            raise

Tim Delaney

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Showing content from https://mail.python.org/pipermail/python-dev/2005-May/053620.html below:

Deterministic Finalisation (new PEP draft, either a competitor or update to PEP 340)