commit 917bba1f2a382d5251b94eeadc344ec6ed3eaa97
author Raymond Hettinger <python@rcn.com> Sun Aug 22 08:01:58 2010 +0000
committer Raymond Hettinger <python@rcn.com> Sun Aug 22 08:01:58 2010 +0000
tree dd89a8e06736c0618f0a3f26de8501790a2f059a
parent 058981b2ec2d96d58aea3fc285fee062a32a5854

Issue #9214:  Fix set operations on KeysView and ItemsView.

Lib/_abcoll.py

diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index a442d7c..e9234af 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -390,6 +390,10 @@
 
 class KeysView(MappingView, Set):
 
+    @classmethod
+    def _from_iterable(self, it):
+        return set(it)
+
     def __contains__(self, key):
         return key in self._mapping
 
@@ -400,6 +404,10 @@
 
 class ItemsView(MappingView, Set):
 
+    @classmethod
+    def _from_iterable(self, it):
+        return set(it)
+
     def __contains__(self, item):
         key, value = item
         try: