backport change from trunk

8bf5ea70 · Benjamin Peterson · c5959630 · 8bf5ea70
Commit 8bf5ea70 authored Dec 16, 2009 by Benjamin Peterson
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Lib/test/test_descr.py Lib/test/test_descr.py +2 -0

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--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -1776,6 +1776,8 @@ order (MRO) for bases """

        # Safety test for __cmp__
        def unsafecmp(a, b):
+            if not hasattr(a.__class__, "__cmp__"):
+                return
            try:
                a.__class__.__cmp__(a, b)
            except TypeError: