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Created Feb 23, 2016
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def __eq__(self, other):
- return isinstance(other, self.__class__) and self._get_pk_val() == other._get_pk_val()
+ if not isinstance(other, Model):
+ return False
+ if self._meta.concrete_model != other._meta.concrete_model:
+ return False
+ my_pk = self._get_pk_val()
+ if my_pk is None:
+ return self is other
+ return my_pk == other._get_pk_val()
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