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Mon Aug 8 16:07:25 EDT 2016 · https://mail.python.org/pipermail/python-dev/2016-August/145787.html

On 2016-08-08 3:33 PM, Giampaolo Rodola' wrote:
> I wanted to give it a try rewriting this in C but since 
> @contextmanager has a lot of magic I wanted to ask first whether this 
> 1) is technically possible 2) is desirable.

It is definitely technologically possible.  However, the C 
implementation will be quite complex, and will require a lot of time to 
review and later maintain.  My question would be how critical is the 
performance of @contextmanager?  I'd say that unless it's used in a 
tight loop it can't affect the performance too much.

Yury

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[Python-Dev] Rewrite @contextlib.contextmanager in C