diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-03-24-22-26-26.bpo-1635741.AB38ot.rst b/Misc/NEWS.d/next/Core and Builtins/2020-03-24-22-26-26.bpo-1635741.AB38ot.rst
new file mode 100644
index 00000000000000..1a6116283435db
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2020-03-24-22-26-26.bpo-1635741.AB38ot.rst
@@ -0,0 +1,2 @@
+Port _functools module to multiphase initialization (PEP 489). Patch by
+Paulo Henrique Silva.
diff --git a/Modules/_functoolsmodule.c b/Modules/_functoolsmodule.c
index ff733b8d45a308..2e27d48b147532 100644
--- a/Modules/_functoolsmodule.c
+++ b/Modules/_functoolsmodule.c
@@ -1400,10 +1400,10 @@ static PyTypeObject lru_cache_type = {
/* module level code ********************************************************/
-PyDoc_STRVAR(module_doc,
+PyDoc_STRVAR(_functools_doc,
"Tools that operate on functions.");
-static PyMethodDef module_methods[] = {
+static PyMethodDef _functools_methods[] = {
{"reduce", functools_reduce, METH_VARARGS, functools_reduce_doc},
{"cmp_to_key", (PyCFunction)(void(*)(void))functools_cmp_to_key,
METH_VARARGS | METH_KEYWORDS, functools_cmp_to_key_doc},
@@ -1411,47 +1411,51 @@ static PyMethodDef module_methods[] = {
};
static void
-module_free(void *m)
+_functools_free(void *m)
{
Py_CLEAR(kwd_mark);
}
-static struct PyModuleDef _functoolsmodule = {
- PyModuleDef_HEAD_INIT,
- "_functools",
- module_doc,
- -1,
- module_methods,
- NULL,
- NULL,
- NULL,
- module_free,
-};
-
-PyMODINIT_FUNC
-PyInit__functools(void)
+static int
+_functools_exec(PyObject *module)
{
- PyObject *m;
PyTypeObject *typelist[] = {
&partial_type,
&lru_cache_type
};
- m = PyModule_Create(&_functoolsmodule);
- if (m == NULL)
- return NULL;
-
kwd_mark = _PyObject_CallNoArg((PyObject *)&PyBaseObject_Type);
if (!kwd_mark) {
- Py_DECREF(m);
- return NULL;
+ return -1;
}
for (size_t i = 0; i < Py_ARRAY_LENGTH(typelist); i++) {
- if (PyModule_AddType(m, typelist[i]) < 0) {
- Py_DECREF(m);
- return NULL;
+ if (PyModule_AddType(module, typelist[i]) < 0) {
+ return -1;
}
}
- return m;
+ return 0;
+}
+
+static struct PyModuleDef_Slot _functools_slots[] = {
+ {Py_mod_exec, _functools_exec},
+ {0, NULL}
+};
+
+static struct PyModuleDef _functools_module = {
+ PyModuleDef_HEAD_INIT,
+ "_functools",
+ _functools_doc,
+ 0,
+ _functools_methods,
+ _functools_slots,
+ NULL,
+ NULL,
+ _functools_free,
+};
+
+PyMODINIT_FUNC
+PyInit__functools(void)
+{
+ return PyModuleDef_Init(&_functools_module);
}
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