merge 3.4 (closes #26478)

Lib/test/test_dictviews.py

@@ -96,6 +96,7 @@ class DictSetTest(unittest.TestCase):
         self.assertEqual(d1.keys() & set(d1.keys()), {'a', 'b'})
         self.assertEqual(d1.keys() & set(d2.keys()), {'b'})
         self.assertEqual(d1.keys() & set(d3.keys()), set())
+        self.assertEqual(d1.keys() & tuple(d1.keys()), {'a', 'b'})
 
         self.assertEqual(d1.keys() | d1.keys(), {'a', 'b'})
         self.assertEqual(d1.keys() | d2.keys(), {'a', 'b', 'c'})
@@ -104,6 +105,7 @@ class DictSetTest(unittest.TestCase):
         self.assertEqual(d1.keys() | set(d2.keys()), {'a', 'b', 'c'})
         self.assertEqual(d1.keys() | set(d3.keys()),
                          {'a', 'b', 'd', 'e'})
+        self.assertEqual(d1.keys() | (1, 2), {'a', 'b', 1, 2})
 
         self.assertEqual(d1.keys() ^ d1.keys(), set())
         self.assertEqual(d1.keys() ^ d2.keys(), {'a', 'c'})
@@ -112,6 +114,7 @@ class DictSetTest(unittest.TestCase):
         self.assertEqual(d1.keys() ^ set(d2.keys()), {'a', 'c'})
         self.assertEqual(d1.keys() ^ set(d3.keys()),
                          {'a', 'b', 'd', 'e'})
+        self.assertEqual(d1.keys() ^ tuple(d2.keys()), {'a', 'c'})
 
         self.assertEqual(d1.keys() - d1.keys(), set())
         self.assertEqual(d1.keys() - d2.keys(), {'a'})
@@ -119,6 +122,7 @@ class DictSetTest(unittest.TestCase):
         self.assertEqual(d1.keys() - set(d1.keys()), set())
         self.assertEqual(d1.keys() - set(d2.keys()), {'a'})
         self.assertEqual(d1.keys() - set(d3.keys()), {'a', 'b'})
+        self.assertEqual(d1.keys() - (0, 1), {'a', 'b'})
 
         self.assertFalse(d1.keys().isdisjoint(d1.keys()))
         self.assertFalse(d1.keys().isdisjoint(d2.keys()))

Misc/NEWS

@@ -76,6 +76,9 @@ Core and Builtins
   __bytes__, __trunc__, and __float__ returning instances of subclasses of
   bytes, int, and float to subclasses of bytes, int, and float correspondingly.
 
+- Issue #26478: Fix semantic bugs when using binary operators with dictionary
+  views and tuples.
+
 - Issue #26171: Fix possible integer overflow and heap corruption in
   zipimporter.get_data().
 

Objects/dictobject.c

@@ -3448,7 +3448,7 @@ dictviews_sub(PyObject* self, PyObject *other)
     if (result == NULL)
         return NULL;
 
-    tmp = _PyObject_CallMethodId(result, &PyId_difference_update, "O", other);
+    tmp = _PyObject_CallMethodIdObjArgs(result, &PyId_difference_update, other, NULL);
     if (tmp == NULL) {
         Py_DECREF(result);
         return NULL;
@@ -3468,7 +3468,7 @@ _PyDictView_Intersect(PyObject* self, PyObject *other)
     if (result == NULL)
         return NULL;
 
-    tmp = _PyObject_CallMethodId(result, &PyId_intersection_update, "O", other);
+    tmp = _PyObject_CallMethodIdObjArgs(result, &PyId_intersection_update, other, NULL);
     if (tmp == NULL) {
         Py_DECREF(result);
         return NULL;
@@ -3488,7 +3488,7 @@ dictviews_or(PyObject* self, PyObject *other)
     if (result == NULL)
         return NULL;
 
-    tmp = _PyObject_CallMethodId(result, &PyId_update, "O", other);
+    tmp = _PyObject_CallMethodIdObjArgs(result, &PyId_update, other, NULL);
     if (tmp == NULL) {
         Py_DECREF(result);
         return NULL;
@@ -3508,8 +3508,7 @@ dictviews_xor(PyObject* self, PyObject *other)
     if (result == NULL)
         return NULL;
 
-    tmp = _PyObject_CallMethodId(result, &PyId_symmetric_difference_update, "O",
-                              other);
+    tmp = _PyObject_CallMethodIdObjArgs(result, &PyId_symmetric_difference_update, other, NULL);
     if (tmp == NULL) {
         Py_DECREF(result);
         return NULL;