Because I might have written some code in which I'm expecting that integer particular variable to have an integer value.

因为我可能写了一些代码,来把一些,变量的类型，指定为。

麻省理工公开课 - 计算机科学及编程导论课程节选

Important lesson, so that there would be some predictability in the results and I would have some, if you will, smoke test for knowing whether or not I was getting, my code seemed to be working.

这很重要，因为这样我就可以预测,结果会是多少了，如果你愿意，我们可以做烟气试验,来看我的代码是否工作正常。

麻省理工公开课 - 计算机科学及编程导论课程节选

I should also warn you that this code includes some Python concepts, at least one, that you have not yet seen.

我得事先说明这个代码中,包括了一些你没见过的Python语言的概念，至少一个。

麻省理工公开课 - 计算机科学及编程导论课程节选

to do sqrt, or square root-- no, I'm going to square root use sqrt, that's the name I'm using here-- square root a hundred different places in some piece of code. Without function, I'd have to copy that piece of code everywhere.

让我做一下准备,想象一下我要调用sqrt或者-,不，我会调用sqrt函数,这是我在这里用的名字，我得把这段代码到处复制。

麻省理工公开课 - 计算机科学及编程导论课程节选