Exclude optimizer instances from the state_dict #21
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If attribute 'optimizer' as a python object are pickled together, one may encounter a compatibility issue when loading it back.
(unless the same optimizer module is imported from the same path to recognize the saved attributes.)
The
self.optimizer
, by default, expected to be filtered out, butself.after_scheduler.optimizer
has to be taken into account as well. So, I've overriden relevant methods to exclude optimizer instances from the state_dict.