[Python-Dev] Rewrite @contextlib.contextmanager in C (original) (raw)

Guido van Rossum guido at python.org
Mon Aug 8 16🔞37 EDT 2016

I think Nick would be interested in understanding why this is the case. What does the decorator do that could be so expensive?

On Mon, Aug 8, 2016 at 1:07 PM, Yury Selivanov <yselivanov.ml at gmail.com> wrote:

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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