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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 create(self, model):
 """ Given a model object instance create it """


        signals.pre_create.send(model.__class__, model=model)
        signals.pre_save.send(model.__class__, model=model)

        param = self.to_pg(model)
        query = """
                INSERT INTO {table} ({dirty_cols})
                VALUES ({dirty_vals})
                RETURNING {cols};
                """

        query = query.format(
            cols=self.field_cols(model),
            dirty_cols=self.dirty_cols(model),
            dirty_vals=self.dirty_vals(model),
            table=model.rtype,
        )

        result = self.query(query, param=param)

        signals.post_create.send(model.__class__, model=model)
        signals.post_save.send(model.__class__, model=model)

        return model.merge(result[0], clean=True)