Issue #11875: Alter the previous fix to work better with subclasses
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25458f155a
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@ -155,7 +155,7 @@ class OrderedDict(dict):
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'Return state information for pickling'
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items = [[k, self[k]] for k in self]
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inst_dict = vars(self).copy()
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for k in vars(self.__class__()):
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for k in vars(OrderedDict()):
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inst_dict.pop(k, None)
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if inst_dict:
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return (self.__class__, (items,), inst_dict)
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