commit abf3fcf39fb3bff4d347296a083a4c62d515dacd
author Raymond Hettinger <python@rcn.com> Wed Jan 30 00:01:07 2008 +0000
committer Raymond Hettinger <python@rcn.com> Wed Jan 30 00:01:07 2008 +0000
tree a1e753b1c89a53417a2ac71c8dc10ceb9952a5c3
parent 867558afd69675be8263a19c3d23b92812a0a62a

Add isdisjoint() to the Set/MutableSet ABCs.

Lib/_abcoll.py

diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index ac967b2..3a84b96 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -177,6 +177,12 @@
             return NotImplemented
         return self._from_iterable(value for value in other if value in self)
 
+    def isdisjoint(self, other):
+        for value in other:
+            if value in self:
+                return False
+        return True
+
     def __or__(self, other):
         if not isinstance(other, Iterable):
             return NotImplemented