Irit Katriel <iritkatr...@gmail.com> added the comment:
The default __reduce__ method of Exception returns the arg you pass to the
Exception constructor:
>>> a = ExcA("a banana")
>>> a.__reduce__()
(<class '__main__.ExcA'>, ('missing a banana',))
>>>
This is then pickled, and when unpickled the arg is passed to the ExcA
constructor.
If you want to change this, you can implement __reduce__ on ExcA o return just
the part you want it to return.
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nosy: +iritkatriel
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue45112>
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