One way is a while statement, also called a while loop.

一种方法是 while 语句，也称为 while 循环。

In the first loop, this again is a while loop.

在第一个循环中，这又是一个 while 循环。

It does this in this while loop.

它在这个 while 循环中执行此操作。

A while loop checks the condition first and then does something instead.

while循环首先检查条件，然后执行一些操作。

We've hit the end of the while loop, which jumps the program back up.

我们已经到达了 while 循环的结尾，它使程序跳回原处。

To animate him replenishing our stock back up to a maximum of 4, we can use a while loop.

为了让他将我们的库存补充到最多 4 个，我们可以使用 while 循环。

And if that message actually tells you to jump to some code, you break out of this outer while loop.

如果该消息实际上告诉您跳转到某些代码，您就会跳出这个外部 while 循环。

When we enter the while loop, the first thing the computer does is test its conditional… is relays less than 4?

当我们进入 while 循环时，计算机做的第一件事就是测试它的条件… … 继电器是否小于 4？

Then bash also has control flow techniques that we'll see later, like for loops, while loops, and one main thing is you can define functions.

然后 bash 还具有我们稍后会看到的控制流技术，例如 for 循环、while 循环，其中一件主要的事情是您可以定义函数。

In this tutorial, I'm going to talk to you guys about for loops in python. In the last tutorial, you learned about while loops you learned that we use while loops to execute a block of code multiple times.

在本教程中，我将与大家讨论 python 中的 for 循环。在上一个教程中，您了解了 while 循环，您了解到我们使用 while 循环多次执行一段代码。

You can also do things like while loops, for loops, conditionals... All of these - you can define functions, you can have variables, and all of these things you can do in the shell.

您还可以执行 while 循环、for 循环、条件语句等操作...所有这些 - 您可以定义函数、可以拥有变量，以及所有这些操作都可以在 shell 中执行。