def get_polynomial_value(username, server_id):
    polynomialdb = db.polynomial_mapping_setup(server_id)
    mapping = polynomialdb.query(
        db.UsernamePolynomialValueMapping).get(username)
    if mapping:
        return mapping.polynomial_value
    return None
def set_polynomial_value(username, polynomial_value, server_id):
    polynomialdb = db.polynomial_mapping_setup(server_id)
    mapping = polynomialdb.query(
        db.UsernamePolynomialValueMapping).get(username)
    if mapping is None:
        new_mapping = db.UsernamePolynomialValueMapping()
        new_mapping.username = username
        new_mapping.polynomial_value = polynomial_value
        polynomialdb.add(new_mapping)
        polynomialdb.commit()
        return True
    return False