commit 859db26729fc0edbcafb36675fa105eb00f9d24f
author Raymond Hettinger <python@rcn.com> Wed Nov 12 15:21:20 2003 +0000
committer Raymond Hettinger <python@rcn.com> Wed Nov 12 15:21:20 2003 +0000
tree 02d3cd5ecfb7c12df53a9e4dd1e3b8f6bc56bca2
parent ad983e79d6f215235d205245c2599620e33cf719

Improve backwards compatibility code to handle True/False.

Lib/sets.py

diff --git a/Lib/sets.py b/Lib/sets.py
index 6fea65f..6e09005 100644
--- a/Lib/sets.py
+++ b/Lib/sets.py
@@ -73,6 +73,10 @@
         for x in iterable:
             if not predicate(x):
                 yield x
+    try:
+        True, False
+    except NameError:
+        True, False = (0==0, 0!=0)
 
 __all__ = ['BaseSet', 'Set', 'ImmutableSet']