diff -r 0480b540a451 Objects/abstract.c
--- a/Objects/abstract.c	Tue Sep 20 00:03:09 2016 +0200
+++ b/Objects/abstract.c	Mon Sep 19 21:10:07 2016 -0400
@@ -1795,6 +1795,10 @@
     /* Fill the tuple. */
     for (j = 0; ; ++j) {
         PyObject *item = PyIter_Next(it);
+        /* check for ctrl-c interrupt */
+        PyErr_CheckSignals();
+        if (PyErr_ExceptionMatches(PyExc_KeyboardInterrupt))
+            return NULL;
         if (item == NULL) {
             if (PyErr_Occurred())
                 goto Fail;
diff -r 0480b540a451 Objects/dictobject.c
--- a/Objects/dictobject.c	Tue Sep 20 00:03:09 2016 +0200
+++ b/Objects/dictobject.c	Mon Sep 19 21:10:07 2016 -0400
@@ -2327,6 +2327,11 @@
         PyObject *key, *value;
         Py_ssize_t n;
 
+        /* check for ctrl-c interrupt */
+        PyErr_CheckSignals();
+        if (PyErr_ExceptionMatches(PyExc_KeyboardInterrupt))
+            return -1;
+
         fast = NULL;
         item = PyIter_Next(it);
         if (item == NULL) {
diff -r 0480b540a451 Objects/listobject.c
--- a/Objects/listobject.c	Tue Sep 20 00:03:09 2016 +0200
+++ b/Objects/listobject.c	Mon Sep 19 21:10:07 2016 -0400
@@ -855,6 +855,10 @@
     /* Run iterator to exhaustion. */
     for (;;) {
         PyObject *item = iternext(it);
+        /* check for ctrl-c interrupt */
+        PyErr_CheckSignals();
+        if (PyErr_ExceptionMatches(PyExc_KeyboardInterrupt))
+            return NULL;
         if (item == NULL) {
             if (PyErr_Occurred()) {
                 if (PyErr_ExceptionMatches(PyExc_StopIteration))
diff -r 0480b540a451 Objects/setobject.c
--- a/Objects/setobject.c	Tue Sep 20 00:03:09 2016 +0200
+++ b/Objects/setobject.c	Mon Sep 19 21:10:07 2016 -0400
@@ -1005,6 +1005,10 @@
         return -1;
 
     while ((key = PyIter_Next(it)) != NULL) {
+        /* check for ctrl-c interrupt */
+        PyErr_CheckSignals();
+        if (PyErr_ExceptionMatches(PyExc_KeyboardInterrupt))
+            return -1;
         if (set_add_key(so, key)) {
             Py_DECREF(it);
             Py_DECREF(key);
diff -r 0480b540a451 Python/bltinmodule.c
--- a/Python/bltinmodule.c	Tue Sep 20 00:03:09 2016 +0200
+++ b/Python/bltinmodule.c	Mon Sep 19 21:10:07 2016 -0400
@@ -1517,6 +1517,10 @@
     maxitem = NULL; /* the result */
     maxval = NULL;  /* the value associated with the result */
     while (( item = PyIter_Next(it) )) {
+        /* check for ctrl-c interrupt */
+        PyErr_CheckSignals();
+        if (PyErr_ExceptionMatches(PyExc_KeyboardInterrupt))
+            return NULL;
         /* get the value from the key function */
         if (keyfunc != NULL) {
             val = PyObject_CallFunctionObjArgs(keyfunc, item, NULL);
@@ -2226,6 +2230,10 @@
             result = NULL;
         }
         while(result == NULL) {
+            /* check for ctrl-c interrupt */
+            PyErr_CheckSignals();
+            if (PyErr_ExceptionMatches(PyExc_KeyboardInterrupt))
+                return NULL;
             item = PyIter_Next(iter);
             if (item == NULL) {
                 Py_DECREF(iter);
@@ -2265,6 +2273,10 @@
         Py_DECREF(result);
         result = NULL;
         while(result == NULL) {
+            /* check for ctrl-c interrupt */
+            PyErr_CheckSignals();
+            if (PyErr_ExceptionMatches(PyExc_KeyboardInterrupt))
+                return NULL;
             item = PyIter_Next(iter);
             if (item == NULL) {
                 Py_DECREF(iter);
@@ -2305,6 +2317,10 @@
 #endif
 
     for(;;) {
+        /* check for ctrl-c interrupt */
+        PyErr_CheckSignals();
+        if (PyErr_ExceptionMatches(PyExc_KeyboardInterrupt))
+            return NULL;
         item = PyIter_Next(iter);
         if (item == NULL) {
             /* error, or end-of-sequence */