human
Here's a good function header given the following:
I wrote the below code

    class Duck(db.Model, ):
        id = db.Column(db.Integer, primary_key=True)
    class IdMixin(object, ):
        @declared_attr
        def id(cls):
            return db.Column(db.Integer, db.ForeignKey(Duck.id), primary_key=True)
    class RubberDuck(IdMixin, Duck, ):
        pass
    assert (RubberDuck.__tablename__ == 'rubber_duck')

What's a good function header?
assistant
#Here's a good function header.

def test_complex_inheritance(db):