def __call__(self, field_data, all_data):
        for field_name, value in all_data.items():
            if field_name != self.field_name and value >= field_data:
                raise ValidationError, self.error_message
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-0.96/django/core/validators.py/UniqueAmongstFieldsWithPrefix.__call__/operator `==` -> `>=`