* 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.