Merge python#20

20: Warn for missing dict features r=ltratt a=nanjekyejoannah

I warn for several features.

i looked at this code earlier and had an illusion, for some reason I thought we had these covered until I ran against twisted.

Co-authored-by: Joannah Nanjekye <jnanjeky@unb.ca>

Lib/test/test_py3kwarn.py

@@ -112,6 +112,42 @@ def test_dict_inequality_comparisons(self):
             w.reset()
             self.assertWarning({2:3} >= {}, w, expected)
 
+    def test_dict_viewkeys(self):
+        expected = 'dict.viewkeys() is not supported in 3.x: use dict.keys() instead'
+        with check_py3k_warnings() as w:
+            d = {}
+            d.viewkeys()
+
+    def test_dict_viewvalues(self):
+        expected = 'dict.viewvalues() is not supported in 3.x: use dict.values() instead'
+        with check_py3k_warnings() as w:
+            d = {}
+            d.viewvalues()
+
+    def test_dict_viewitems(self):
+        expected = 'dict.viewitems() is not supported in 3.x: use dict.items() instead'
+        with check_py3k_warnings() as w:
+            d = {}
+            d.viewitems()
+
+    def test_dict_iterkeys(self):
+        expected = 'dict.iterkeys() is not supported in 3.x: use dict.keys() instead'
+        with check_py3k_warnings() as w:
+            d = {}
+            d.iterkeys()
+
+    def test_dict_itervalues(self):
+        expected = 'dict.itervalues() is not supported in 3.x: use dict.values() instead'
+        with check_py3k_warnings() as w:
+            d = {}
+            d.itervalues()
+
+    def test_dict_iteritems(self):
+        expected = 'dict.iteritems() is not supported in 3.x: use dict.items() instead'
+        with check_py3k_warnings() as w:
+            d = {}
+            d.iteritems()
+
     def test_cell_inequality_comparisons(self):
         expected = 'cell comparisons not supported in 3.x'
         def f(x):

Objects/dictobject.c

@@ -2216,18 +2216,27 @@ static PyObject *dictiter_new(PyDictObject *, PyTypeObject *);
 static PyObject *
 dict_iterkeys(PyDictObject *dict)
 {
+    if (PyErr_WarnPy3k_WithFix("dict.iterkeys() is not supported in 3.x",
+                                "use dict.keys() instead", 1) < 0)
+        return NULL;
     return dictiter_new(dict, &PyDictIterKey_Type);
 }
 
 static PyObject *
 dict_itervalues(PyDictObject *dict)
 {
+    if (PyErr_WarnPy3k_WithFix("dict.itervalues() is not supported in 3.x",
+                                "use dict.values() instead", 1) < 0)
+        return NULL;
     return dictiter_new(dict, &PyDictIterValue_Type);
 }
 
 static PyObject *
 dict_iteritems(PyDictObject *dict)
 {
+    if (PyErr_WarnPy3k_WithFix("dict.iteritems() is not supported in 3.x",
+                                "use dict.items() instead", 1) < 0)
+        return NULL;
     return dictiter_new(dict, &PyDictIterItem_Type);
 }
 
@@ -3195,6 +3204,9 @@ PyTypeObject PyDictKeys_Type = {
 static PyObject *
 dictkeys_new(PyObject *dict)
 {
+    if (PyErr_WarnPy3k_WithFix("dict.viewkeys() is not supported in 3.x",
+                                "use dict.keys() instead", 1) < 0)
+        return NULL;
     return dictview_new(dict, &PyDictKeys_Type);
 }
 
@@ -3284,6 +3296,9 @@ PyTypeObject PyDictItems_Type = {
 static PyObject *
 dictitems_new(PyObject *dict)
 {
+    if (PyErr_WarnPy3k_WithFix("dict.viewitems() is not supported in 3.x",
+                                "use dict.items() instead", 1) < 0)
+        return NULL;
     return dictview_new(dict, &PyDictItems_Type);
 }
 
@@ -3349,5 +3364,8 @@ PyTypeObject PyDictValues_Type = {
 static PyObject *
 dictvalues_new(PyObject *dict)
 {
+    if (PyErr_WarnPy3k_WithFix("dict.viewvalues() is not supported in 3.x",
+                                "use dict.values() instead", 1) < 0)
+        return NULL;
     return dictview_new(dict, &PyDictValues_Type);
 }