From 4c1b6a6f4fc46add0097efb3026cf3f0c89f88a2 Mon Sep 17 00:00:00 2001
From: Hai Shi <shihai1992@gmail.com>
Date: Mon, 17 Feb 2020 21:50:35 +0800
Subject: bpo-1635741: Port _abc extension to multiphase initialization (PEP
 489) (GH-18030)

---
 .../2020-01-16-12-00-04.bpo-1635741.fuqoBG.rst     |  1 +
 Modules/_abc.c                                     | 27 ++++++++++++++--------
 2 files changed, 19 insertions(+), 9 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Core and Builtins/2020-01-16-12-00-04.bpo-1635741.fuqoBG.rst

diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-01-16-12-00-04.bpo-1635741.fuqoBG.rst b/Misc/NEWS.d/next/Core and Builtins/2020-01-16-12-00-04.bpo-1635741.fuqoBG.rst
new file mode 100644
index 0000000..4dd37a6
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2020-01-16-12-00-04.bpo-1635741.fuqoBG.rst	
@@ -0,0 +1 @@
+Port _abc extension module to multiphase initialization (:pep:`489`).
diff --git a/Modules/_abc.c b/Modules/_abc.c
index e21fe78..c991295 100644
--- a/Modules/_abc.c
+++ b/Modules/_abc.c
@@ -807,26 +807,35 @@ static struct PyMethodDef module_functions[] = {
     {NULL,       NULL}          /* sentinel */
 };
 
+static int
+_abc_exec(PyObject *module)
+{
+    if (PyType_Ready(&_abc_data_type) < 0) {
+        return -1;
+    }
+    _abc_data_type.tp_doc = abc_data_doc;
+    return 0;
+}
+
+static PyModuleDef_Slot _abc_slots[] = {
+    {Py_mod_exec, _abc_exec},
+    {0, NULL}
+};
+
 static struct PyModuleDef _abcmodule = {
     PyModuleDef_HEAD_INIT,
     "_abc",
     _abc__doc__,
-    -1,
+    0,
     module_functions,
-    NULL,
+    _abc_slots,
     NULL,
     NULL,
     NULL
 };
 
-
 PyMODINIT_FUNC
 PyInit__abc(void)
 {
-    if (PyType_Ready(&_abc_data_type) < 0) {
-        return NULL;
-    }
-    _abc_data_type.tp_doc = abc_data_doc;
-
-    return PyModule_Create(&_abcmodule);
+    return PyModuleDef_Init(&_abcmodule);
 }
-- 
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