- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;

and .keys(), .items(), .values() return dict views.

The dict views aren't fully functional yet; in particular, they can't
be compared to sets yet.  but they are useful as "iterator wells".

There are still 27 failing unit tests; I expect that many of these
have fairly trivial fixes, but there are so many, I could use help.

Lib/test/test_iterlen.py

@@ -139,14 +139,14 @@ class TestDictItems(TestTemporarilyImmutable):
 
     def setUp(self):
         d = dict.fromkeys(xrange(n))
-        self.it = d.iteritems()
+        self.it = d.items()
         self.mutate = d.popitem
 
 class TestDictValues(TestTemporarilyImmutable):
 
     def setUp(self):
         d = dict.fromkeys(xrange(n))
-        self.it = d.itervalues()
+        self.it = d.values()
         self.mutate = d.popitem
 
 class TestSet(TestTemporarilyImmutable):