C extensions should not use private functions (functions prefixed by _Py), but PEP 523 only added private functions:

• _PyInterpreterState_GetEvalFrameFunc()
• _PyInterpreterState_SetEvalFrameFunc()
• _PyEval_EvalFrameDefault()

I propose promoting these functions as public functions (just remove the _ prefix):

• PyUnstable_InterpreterState_GetEvalFrameFunc()
• PyUnstable_InterpreterState_SetEvalFrameFunc()
• PyUnstable_Eval_EvalFrameDefault()

cc @emmatyping

Update: I added PyUnstable_ prefix to function names.

Linked PRs

• gh-141518: Add PyUnstable_InterpreterState_SetEvalFrameFunc() #141665
• gh-141518: Add PyUnstable_InterpreterFrame_GetFrameObject() function #141950