Victor Stinner wrote:
> I modified "make install" to install internal header files, so it's
> possible to use the internal C API in debuggers and profilers. For
> example, to be able to inspect Python internals without having to call
> functions (which might modify the Python internal state). I made this
> change to be able to move more APIs to the internal API, to reduce the
> size of the public C API. If it wouldn't be possible to use the
> internal C API, it would be more risky to move things into the
> internal API. We might break legit use cases with no solution for
> users.
> Here PyCharm (for example) could be modified to use the internal C
> API, no? Define Py_BUILD_CORE_MODULE macro and include
> "internal/pycore_pystate.h".

https://bugs.python.org/msg356983 suggests that Fabio is okay with it being 
internal only for pydevd.

> Victor
> Le ven. 22 nov. 2019 à 20:36, Eric Snow ericsnowcurren...@gmail.com a écrit :
> >
> > I agree with Mark on "for now I propose that we do
> > absolutely
> > nothing".  (I'll wait on a PEP for the rest of his points.)  The
> > capability of PEP 523 (swapping in a different PyEval_EvalFrame()
> > impl.) is deep in the CPython runtime functionality.  It is low-level,
> > highly impactful, and there-be-dragons.
> > So in my mind it makes perfect sense to keep it "internal", which was
> > an unintended (but not necessarily incorrect) side effect of making
> > PyInterpreterState opaque.  Nothing says "don't use this unless you
> > know what you are doing" better than requiring that extensions define
> > Py_BUILD_CORE_MODULE (or Py_BUILD_CORE or whatever) if they want to
> > use it.
> > Accessor functions seem like overkill in that case since they would
> > require the same Py_BUILD_CORE_MODULE that the PyInterpreterState
> > field now requires.
> > -eric
> > On Thu, Nov 21, 2019 at 1:06 PM Brett Cannon br...@python.org wrote:
> > >
> > An unfortunate side-effect of making
> > PyInterpreterState in Python 3.8 opaque is it removed PEP 523 support. 
> > https://www.python.org/dev/peps/pep-0523/
> > was opened to try and fix this, but there seems to be a stalemate in the 
> > issue.
> > A key question is at what API level should setting the frame evaluation 
> > function live
> > at? No one is suggesting the stable ABI, but there isn't agreement between 
> > CPython or the
> > internal API (there's also seems to be a suggestion to potentially remove 
> > PEP 523 support
> > entirely).
> > And regardless of either, there also seems to be a disagreement about 
> > providing getters
> > and setters to continue to try and hide PyInterpreterState regardless of 
> > which API level
> > support is provided at (if any).
> > If you have an opinion please weight in on the issue.
> > 
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