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Author myint
Recipients myint
Date 2014-03-19.14:53:53
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
In multiprocessing.pool, ExceptionWithTraceback is not derived from Exception. Thus when it is raised, we get the exception, "TypeError: exceptions must derive from BaseException". Attached is a patch that fixes this.

See below example traceback that prompted me to notice this:

Traceback (most recent call last):
  File "/Users/myint/Library/Python/3.4/bin/yolk", line 9, in <module>
    load_entry_point('yolk3k==0.7.3', 'console_scripts', 'yolk')()
  File "/Users/myint/Library/Python/3.4/lib/python/site-packages/yolk/", line 1123, in main
  File "/Users/myint/Library/Python/3.4/lib/python/site-packages/yolk/", line 208, in run
    return getattr(self, action)()
  File "/Users/myint/Library/Python/3.4/lib/python/site-packages/yolk/", line 240, in show_updates
    for (project_name, version, newest) in _updates(pkg_list, self.pypi):
  File "/Users/myint/Library/Python/3.4/lib/python/site-packages/yolk/", line 1104, in _updates
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/multiprocessing/", line 255, in map
    return self._map_async(func, iterable, mapstar, chunksize).get()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/multiprocessing/", line 594, in get
    raise self._value
TypeError: exceptions must derive from BaseException
Date User Action Args
2014-03-19 14:53:54myintsetrecipients: + myint
2014-03-19 14:53:54myintsetmessageid: <>
2014-03-19 14:53:54myintlinkissue20980 messages
2014-03-19 14:53:53myintcreate