Message375369
According to the doc ( https://docs.python.org/3/library/pickle.html#object.__getstate__ ), an object may not have a __getstate__ method.
During pickling and unpickling, python first finds __getstate__ and __setstate__, which may invoke a customed __getattr__. I think this is unnecessary if python just provides a default implementation for __getstate__ / __setstate__ . An additional benefit of this is that __setstate__ and __getstate__ becomes available for every object and it is possible to do something like ``getstate(obj)``.
For people who customize __getattr__, I think no one intends to deal with ``obj.__getattr__(“__getstate__”)``, so it makes sense not to invoke ``__getattr__`` during pickling and unpickling. |
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Date |
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2020-08-14 04:57:50 | youkaichao | set | recipients:
+ youkaichao |
2020-08-14 04:57:50 | youkaichao | set | messageid: <1597381070.63.0.19953658002.issue41547@roundup.psfhosted.org> |
2020-08-14 04:57:50 | youkaichao | link | issue41547 messages |
2020-08-14 04:57:50 | youkaichao | create | |
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