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https://github.com/wassname/catalyst.git
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Delaney Granizo-Mackenzie
c6596e2ee2
In order to be able to load from saved state generated by old code, we need to have a notion of the version of the saved state.
56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
# Label for the serialization version field in the state returned by
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# __getstate__.
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VERSION_LABEL = '_stateversion_'
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class SerializeableZiplineObject(object):
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"""
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This class implements the basic set and get state methods used for
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serialization. It also serves as a demarkation of which objects we
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serialize.
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"""
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def __getstate__(self):
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"""
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Many get_state methods need this one line of code.
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This method deduplicates the code calls.
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"""
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state_dict = \
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{k: v for k, v in self.__dict__.iteritems()
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if not k.startswith('_')}
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return state_dict
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def __setstate__(self, state):
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"""
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Many objects require only this code.
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"""
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self.__dict__.update(state)
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# =====================================================
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# These are helper methods for some problem data types.
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# =====================================================
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def _defaultdict_list_get_state(self, d):
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return {
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'__original.type__': 'encoded.defaultdict_list',
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'as_dict': dict(d)
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}
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def _defaultdict_ordered_get_state(self, d):
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return {
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'__original.type__': 'encoded.defaultdict_ordered',
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'as_dict': dict(d)
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}
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def _positiondict_get_state(self, d):
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return {
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'__original.type__': 'encoded.positiondict',
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'as_dict': dict(d)
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}
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def _positions_get_state(self, d):
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return {
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'__original.type__': 'encoded.Positions',
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'as_dict': dict(d)
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}
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