In the not so distant past I have proposed to introduce a new category, "Unstable APIs". These are public but are not guaranteed to be backwards compatible in feature releases (though I feel they should remain so in bugfix releases). I'm not sure whether those should have a leading underscore or not. Perhaps (like some other languages do and like maybe we've used in a few places) the name could just include the word "Unstable"? On Wed, Mar 30, 2022 at 8:08 AM Victor Stinner <vstinner@python.org> wrote:
The internal C API can be used on purpose. But there is no backward compatibility warranty and it can change anytime. In practice, usually it only changes in 3.x.0 releases. For example, these private C API changed in Python 3.9 and Python 3.11 (see my first email in the other PEP 523 thread).
To use the internal C API, you have to declare the Py_BUILD_CORE macro and include an internal C API header file. For _PyInterpreterState_SetEvalFrameFunc(), it should be:
#ifndef Py_BUILD_CORE_MODULE # define Py_BUILD_CORE_MODULE #endif #include <Python.h> #include <internal/pycore_interp.h> // _PyInterpreterState_SetEvalFrameFunc() #include <internal/pycore_ceval.h> // _PyEval_EvalFrameDefault
Victor
On Tue, Mar 29, 2022 at 12:26 AM Jason Ansel via Python-Dev <python-dev@python.org> wrote:
The PyTorch team plans to use PEP 523 as a part of PyTorch 2.0, so this
proposal may break the next major release of PyTorch.
The related project is TorchDynamo, which can be found here: https://github.com/facebookresearch/torchdynamo
We will likely move this into the core of PyTorch closer to release.
If the changed happens, would PyTorch still be able to use the eval
frame API? Or would it prevent from being used entirely?
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