diff -r 0dd6ac8ea523 Modules/_operator.c
--- a/Modules/_operator.c	Mon Apr 25 00:12:32 2016 +0300
+++ b/Modules/_operator.c	Mon Apr 25 00:31:39 2016 +0300
@@ -460,7 +460,7 @@ itemgetter_call(itemgetterobject *ig, Py
     PyObject *obj, *result;
     Py_ssize_t i, nitems=ig->nitems;
 
-    if (!_PyArg_NoKeywords("itemgetter", kw))
+    if (kw != NULL && !_PyArg_NoKeywords("itemgetter", kw))
         return NULL;
     if (!PyArg_UnpackTuple(args, "itemgetter", 1, 1, &obj))
         return NULL;
@@ -749,7 +749,7 @@ attrgetter_call(attrgetterobject *ag, Py
     PyObject *obj, *result;
     Py_ssize_t i, nattrs=ag->nattrs;
 
-    if (!_PyArg_NoKeywords("attrgetter", kw))
+    if (kw != NULL && !_PyArg_NoKeywords("attrgetter", kw))
         return NULL;
     if (!PyArg_UnpackTuple(args, "attrgetter", 1, 1, &obj))
         return NULL;
@@ -992,7 +992,7 @@ methodcaller_call(methodcallerobject *mc
 {
     PyObject *method, *obj, *result;
 
-    if (!_PyArg_NoKeywords("methodcaller", kw))
+    if (kw != NULL && !_PyArg_NoKeywords("methodcaller", kw))
         return NULL;
     if (!PyArg_UnpackTuple(args, "methodcaller", 1, 1, &obj))
         return NULL;