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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_ordering_fields_lookups(self):
 """ Getting real model fields to order by """

        ordering_field = []
        for field_name in self.get_ordering_fields():
            ordering_field.append(self._get_ordering_field_lookup(field_name))
        return ordering_field