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Jan 14, 2025
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gh-106320: Document replacement for removed C API #128787

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gh-106320: Document replacement for removed C API
vstinner Jan 13, 2025
cedf3cc
Update Doc/whatsnew/3.13.rst
vstinner Jan 13, 2025
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Add _PyErr_WriteUnraisableMsg()
vstinner Jan 13, 2025
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27 changes: 27 additions & 0 deletions Doc/whatsnew/3.13.rst
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Expand Up @@ -2706,6 +2706,33 @@ Changes in the C API
Calling this function is redundant now that :c:func:`PyFrame_GetLocals`
returns a write-through proxy for :term:`optimized scopes <optimized scope>`.

* Python 3.13 removed many private functions. Some of them can be replaced using these
alternatives:

* ``_PyDict_Pop()``: :c:func:`PyDict_Pop` or :c:func:`PyDict_PopString`;
* ``_PyDict_GetItemWithError()``: :c:func:`PyDict_GetItemRef`;
* ``_PyErr_WriteUnraisableMsg()``: :c:func:`PyErr_FormatUnraisable`;
* ``_PyEval_SetTrace()``: :c:func:`PyEval_SetTrace` or :c:func:`PyEval_SetTraceAllThreads`;
* ``_PyList_Extend()``: :c:func:`PyList_Extend`;
* ``_PyLong_AsInt()``: :c:func:`PyLong_AsInt`;
* ``_PyMem_RawStrdup()``: ``strdup()``;
* ``_PyMem_Strdup()``: ``strdup()``;
* ``_PyObject_ClearManagedDict()``: :c:func:`PyObject_ClearManagedDict`;
* ``_PyObject_VisitManagedDict()``: :c:func:`PyObject_VisitManagedDict`;
* ``_PyThreadState_UncheckedGet()``: :c:func:`PyThreadState_GetUnchecked()`;
* ``_PyTime_AsSecondsDouble()``: :c:func:`PyTime_AsSecondsDouble`;
* ``_PyTime_GetMonotonicClock()``: :c:func:`PyTime_Monotonic` or :c:func:`PyTime_MonotonicRaw`;
* ``_PyTime_GetPerfCounter()``: :c:func:`PyTime_PerfCounter` or :c:func:`PyTime_PerfCounterRaw`;
* ``_PyTime_GetSystemClock()``: :c:func:`PyTime_Time` or :c:func:`PyTime_TimeRaw`;
* ``_PyTime_MAX``: :c:var:`PyTime_MAX`;
* ``_PyTime_MIN``: :c:var:`PyTime_MIN`;
* ``_PyTime_t``: :c:type:`PyTime_t`;
* ``_Py_HashPointer()``: :c:func:`Py_HashPointer`;
* ``_Py_IsFinalizing()``: :c:func:`Py_IsFinalizing`.

The `pythoncapi-compat project`_ can be used to get most of these new
functions on Python 3.12 and older.

Regression Test Changes
=======================

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