普通にセッター使って、データを更新して、最後に commit するだけ。 User.mapper = mapper(User, users) # create a new User myuser = User() myuser.user_name = 'jane' myuser.password = 'hello123' # create another new User myuser2 = User() myuser2.user_name = 'ed' myuser2.password = 'lalalala' # load a third User from the database sqlmyuser3 = User.mapper.select(User.c.user_name=='fred')[0] myuser3.user_name = 'fredjones' # save