Change testdescr.py to use the test_main() approach.
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index d9c166b..fab1e66 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -1952,7 +1952,7 @@
     coerce(0j, C(0))
 
 
-def all():
+def test_main():
     lists()
     dicts()
     dict_constructor()
@@ -1992,7 +1992,7 @@
     classic_comparisons()
     rich_comparisons()
     coercions()
+    if verbose: print "All OK"
 
-all()
-
-if verbose: print "All OK"
+if __name__ == "__main__":
+    test_main()