[Python-ideas] Automatic context managers

[Bruce Leban]

On Fri, Apr 26, 2013 at 12:37 PM, David Mertz <mertz at gnosis.cx> wrote:

> I'd note that there's no reason you couldn't use the so-called "automatic
> context manager" already, it's just a matter of writing your own function
> rather than the built-in 'open()'.  So, e.g. with a few lines of
> definition, you might use:
>
>   boolean = SafeOpen(resource).use()
>

I'd like to see those few lines if they are indeed possible. I don't see
how the function would know when to call __exit__. It has to be after use()
finishes.

--- Bruce
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