You notice what it did, it printed out that little, right up here I'd said enter a number and that's what it's printed out, so I can enter a number and it prints it out.

注意这个程序做了些什么，显示出了指定值，然后显示需要输入个数字,然后程序会显示这个数字，我输入一个数字然后程序显示了它。

麻省理工公开课 - 计算机科学及编程导论课程节选

You may notice that it's always printing out the same number of digits.

显示同样长度的数字,这是怎么回事儿？

麻省理工公开课 - 计算机科学及编程导论课程节选

But that little short hand there is doing exactly the same thing. It is adding that value into some digits and putting it back or signing it back into some digits. And I'll walk through that loop and when I'm done I can print out the total thing does. And if I do that, I get out what I would expect.

加上得到的这个数的,但是这个缩写声明其实是进行了同样的操作,它把我们得到的这个数加到一个数上面去,然后用和对这个数进行了重新赋值,在循环中会去遍历字符串，当完成循环后,程序会显示数字的总和，如果我运行，这个程序的话，我会得到我期待的结果。

麻省理工公开课 - 计算机科学及编程导论课程节选

You'll notice I have the string with the number 1 MIT a string with MIT, and then it just a plain old number, not a string, again it didn't quite give me 3.3 for reasons we've talked before, a and now it in the list a.

你们可以看到这儿有个以字符串1,形式显示的数字1，1个字符串,还有一个非字符串形式的平常数字,结果并不是3。3，原因之前我们，已经讨论过了，还有一个在list中的。

麻省理工公开课 - 计算机科学及编程导论课程节选