One of the advantages of this is, that I don't have to worry about explicitly updating my variable. That happens for me automatically.

这样继续下去，这样做的一个优点是,我不用为更新变量来发愁了,程序会自动的为我进行这个操作，这一点很好。

麻省理工公开课 - 计算机科学及编程导论课程节选

In fact, as a little helper, notice what it's sort of automatically including for me: What's this thing here?

事实上，作为一个帮助程序，请注意,它为我自动分类：这个是什么东西？

哈佛公开课 - 计算机科学课程节选