def really_equal(self, other, excludes=):
Returns a boolean if the two instances of a model are equal.
excludes is a list of field names that should not be considered.
if self is other:
if type(self) != type(other): return False
for field in type(self)._meta.fields:
if field.name not in excludes and (field.get_internal_type() == 'ForeignKey' and getattr(self, "%s_id" % field.name) == getattr(other, "%s_id" % field.name) or getattr(self, field.name) != getattr(other, field.name)):