[issue38500] Provide a way to get/set PyInterpreterState.frame_eval without needing to access interpreter internals

[Eric Snow]

Eric Snow <ericsnowcurrently at gmail.com> added the comment:

It depends on how you look at the degree to which you are interacting with the runtime.  This is a fairly low-level hook into the runtime.  So arguably if you are using this API then you should specify being a "core" extension.  That said, getting that clever about it is a bit too much.  The authors or PEP 523 can correct me if I'm wrong, but it seems like there isn't a good reason to restrict access.

So basically, I agree with you. :)

How about one of the following?

* _PyInterpreterState_SetEvalFrame(_PyFrameEvalFunction eval_frame)
* _PyInterpreterState_SetFrameEval(_PyFrameEvalFunction eval_frame)

The underscore basically says "don't use this unless you know what you are doing".  Or perhaps that is overkill too?  "_PyFrameEvalFunction" has an underscore, so perhaps not.

Also, it would make sense to have a matching getter.

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nosy: +brett.cannon, dino.viehland

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<https://bugs.python.org/issue38500>
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