Pending removal in Python 3.20

Pending removal in Python 3.20 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• :c:func:!_PyObject_CallMethodId, :c:func:!_PyObject_GetAttrId and :c:func:!_PyUnicode_FromId are deprecated since 3.15 and will be removed in 3.20. Instead, use :c:func:PyUnicode_InternFromString() and cache the result in the module state, then call :c:func:PyObject_CallMethod or :c:func:PyObject_GetAttr. (Contributed by Victor Stinner in :gh:141049.)

• The cval field in :c:type:PyComplexObject (:gh:128813). Use :c:func:PyComplex_AsCComplex and :c:func:PyComplex_FromCComplex to convert a Python complex number to/from the C :c:type:Py_complex representation.

• Macros :c:macro:!Py_MATH_PIl and :c:macro:!Py_MATH_El.