Merged revisions 78505-78506 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r78505 | benjamin.peterson | 2010-02-27 11:40:01 -0600 (Sat, 27 Feb 2010) | 1 line

  only accept AttributeError as indicating no __prepare__ attribute on a metaclass, allowing lookup errors to propogate
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  r78506 | benjamin.peterson | 2010-02-27 11:41:13 -0600 (Sat, 27 Feb 2010) | 1 line

  check PyDict_New() for error
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diff --git a/Lib/test/test_metaclass.py b/Lib/test/test_metaclass.py
index 000bcf5..219ab99 100644
--- a/Lib/test/test_metaclass.py
+++ b/Lib/test/test_metaclass.py
@@ -230,6 +230,20 @@
     42
     >>>
 
+Test failures in looking up the __prepare__ method work.
+    >>> class ObscureException(Exception):
+    ...     pass
+    >>> class FailDescr:
+    ...     def __get__(self, instance, owner):
+    ...        raise ObscureException
+    >>> class Meta(type):
+    ...     __prepare__ = FailDescr()
+    >>> class X(metaclass=Meta):
+    ...     pass
+    Traceback (most recent call last):
+    [...]
+    test.test_metaclass.ObscureException
+
 """
 
 __test__ = {'doctests' : doctests}