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_posix.py

diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 4e7a37c..f59607b 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -651,7 +651,7 @@
             groups = idg.read().strip()
             ret = idg.close()
 
-        if ret != None or not groups:
+        if ret is not None or not groups:
             raise unittest.SkipTest("need working 'id -G'")
 
         self.assertEqual(
@@ -665,7 +665,7 @@
             groups = idg.read().strip()
             ret = idg.close()
 
-        if ret != None or not groups:
+        if ret is not None or not groups:
             raise unittest.SkipTest("need working 'id -G'")
 
         # 'id -G' and 'os.getgroups()' should return the same