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Author pierreglaser
Recipients alexandre.vassalotti, docs@python, pierreglaser, pitrou, serhiy.storchaka
Date 2019-02-07.20:59:03
SpamBayes Score -1.0
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It turns out that both pickle and _pickle implement this feature, but the behavior is inconsistent.

- As a reminder, instances of slotted classes do not have a dict attribute (1)
- On the other side, when pickling slotted class instances, __getstate__ can return a tuple of 2 dicts. The first dict represents the __dict__ attribute. Because of (1), this first dict should simply be a sentinel value. In pickle, the condition is that it evaluates to False, but in _pickle, it should be explicitly None.

(- Finally, The second dict in state contains the slotted attribute. )

Here are the lines in the two files causing the inconsistent behavior:

I included an example that illustrates it.
Date User Action Args
2019-02-07 20:59:06pierreglasersetrecipients: + pierreglaser, pitrou, alexandre.vassalotti, docs@python, serhiy.storchaka
2019-02-07 20:59:04pierreglasersetmessageid: <>
2019-02-07 20:59:04pierreglaserlinkissue35933 messages
2019-02-07 20:59:03pierreglasercreate