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Author serhiy.storchaka
Recipients alexandre.vassalotti, brett.cannon, diekhans, eric.snow, ncoghlan, serhiy.storchaka
Date 2017-02-08.11:55:09
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Marked as misclassified Yes
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True. Attributes __context__, __cause__ and __traceback__ are not pickled. The traceback objects are even not pickleable.

What is worse, some other non-special attributes are lost during pickling. For example name and path attributes of ImportError.

>>> try: import foo
... except Exception as ex: exc = ex
>>> exc.__reduce__()
(<class 'ModuleNotFoundError'>, ("No module named 'foo'",), {})

Or the value attribute of StopIteration if it was not passed to the constructor.

>>> exc = StopIteration()
>>> exc.value = 42
>>> exc.__reduce__()
(<class 'StopIteration'>, (), {})
Date User Action Args
2017-02-08 11:55:09serhiy.storchakasetrecipients: + serhiy.storchaka, brett.cannon, ncoghlan, diekhans, alexandre.vassalotti, eric.snow
2017-02-08 11:55:09serhiy.storchakasetmessageid: <>
2017-02-08 11:55:09serhiy.storchakalinkissue29466 messages
2017-02-08 11:55:09serhiy.storchakacreate