Use METH_O where possible (two functions). This does not lead to real

performance changes since the affected functions are not expected to be
used frequently, but reduces the volume of code.

Modules/_weakref.c

@@ -504,12 +504,10 @@ static char weakref_getweakrefcount__doc__[] =
 "to 'object'.";
 
 static PyObject *
-weakref_getweakrefcount(PyObject *self, PyObject *args)
+weakref_getweakrefcount(PyObject *self, PyObject *object)
 {
     PyObject *result = NULL;
-    PyObject *object;
 
-    if (PyArg_ParseTuple(args, "O:getweakrefcount", &object)) {
     if (PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
         PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
 
@@ -517,7 +515,7 @@ weakref_getweakrefcount(PyObject *self, PyObject *args)
     }
     else
         result = PyInt_FromLong(0);
-    }
+
     return result;
 }
 
@@ -527,12 +525,10 @@ static char weakref_getweakrefs__doc__[] =
 "that point to 'object'.";
 
 static PyObject *
-weakref_getweakrefs(PyObject *self, PyObject *args)
+weakref_getweakrefs(PyObject *self, PyObject *object)
 {
     PyObject *result = NULL;
-    PyObject *object;
 
-    if (PyArg_ParseTuple(args, "O:getweakrefs", &object)) {
     if (PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
         PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
         long count = getweakrefcount(*list);
@@ -551,7 +547,6 @@ weakref_getweakrefs(PyObject *self, PyObject *args)
     else {
         result = PyList_New(0);
     }
-    }
     return result;
 }
 
@@ -796,9 +791,9 @@ cleanup_helper(PyObject *object)
 
 static PyMethodDef
 weakref_functions[] =  {
-    {"getweakrefcount", weakref_getweakrefcount,        METH_VARARGS,
+    {"getweakrefcount", weakref_getweakrefcount,        METH_O,
      weakref_getweakrefcount__doc__},
-    {"getweakrefs",     weakref_getweakrefs,            METH_VARARGS,
+    {"getweakrefs",     weakref_getweakrefs,            METH_O,
      weakref_getweakrefs__doc__},
     {"proxy",           weakref_proxy,                  METH_VARARGS,
      weakref_proxy__doc__},