commit 9117c751488a98810d758f15b3113527beb920ef
author Raymond Hettinger <python@rcn.com> Sun Aug 22 07:44:24 2010 +0000
committer Raymond Hettinger <python@rcn.com> Sun Aug 22 07:44:24 2010 +0000
tree e75666f723e74149d9cb0fb0d9d4fd6b85678883
parent a52bae7521dc97f37416cf7e03036a8467672833

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

Lib/_abcoll.py

diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index 7890e97..d3e23c1 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -393,6 +393,10 @@
 
 class KeysView(MappingView, Set):
 
+    @classmethod
+    def _from_iterable(self, it):
+        return set(it)
+
     def __contains__(self, key):
         return key in self._mapping
 
@@ -405,6 +409,10 @@
 
 class ItemsView(MappingView, Set):
 
+    @classmethod
+    def _from_iterable(self, it):
+        return set(it)
+
     def __contains__(self, item):
         key, value = item
         try: