[issue18473] some objects pickled by Python 3.x are not unpicklable in Python 2.x because of incorrect REVERSE_IMPORT_MAPPING

[STINNER Victor]

STINNER Victor added the comment:

A different error:

http://buildbot.python.org/all/builders/AMD64%20Snow%20Leop%203.x/builds/2880/steps/test/logs/stdio

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FAIL: test_class_nested_enum_and_pickle_protocol_four (test.test_enum.TestEnum)
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Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/test_enum.py", line 580, in test_class_nested_enum_and_pickle_protocol_four
    protocol=(0, 3))
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/test_enum.py", line 82, in test_pickle_exception
    dumps(obj, protocol=protocol)
AssertionError: PicklingError not raised

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<http://bugs.python.org/issue18473>
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