commit b29614e047110f4d9af993a6cdec4e3fb7ef9738
author Benjamin Peterson <benjamin@python.org> Tue Oct 09 11:16:03 2012 -0400
committer Benjamin Peterson <benjamin@python.org> Tue Oct 09 11:16:03 2012 -0400
tree a15a5ac7b508c5033f640123f498a322f44b04ce
parent a5119351519926971240f61d0c23a5fc5d00743e

compare singletons by identity not equality (closes #16712)

Patch from Serhiy Storchaka.

Lib/test/test_sys.py

diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 6e0c6ee..e5ec85c 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -897,7 +897,7 @@
         except TypeError:
             tb = sys.exc_info()[2]
             # traceback
-            if tb != None:
+            if tb is not None:
                 check(tb, size('2P2i'))
         # symtable entry
         # XXX