os.popen().close() returns None on success, not 0...

diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 26b8d81a643629c9af057f24a7e5aaa9a2a9f739..c04c67921052b7aa977629108a4c2f1d433b7623 100644 (file)
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -427,7 +427,7 @@ class PosixTester(unittest.TestCase):
             groups = idg.read().strip()
             ret = idg.close()
 
-        if ret != 0 or not groups:
+        if ret != None or not groups:
             raise unittest.SkipTest("need working 'id -G'")
 
         # 'id -G' and 'os.getgroups()' should return the same