1 files changed, 8 insertions, 0 deletions
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 MappingView(Sized):
 
 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 KeysView(MappingView, Set):
 
 class ItemsView(MappingView, Set):
 
+    @classmethod
+    def _from_iterable(self, it):
+        return set(it)
+
     def __contains__(self, item):
         key, value = item
         try: