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When I call this class definition, it calls init, init and I give it an x and a y value.
我说过，当我们，调用这个类的定义的时候，它会去调用。
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Some of which I built: cmp, init, str. And there, notice, are the internal definitions And in fact I should've said, we often call those things fields.
就是给我一个所有东西的列表：,所有的方法，与这个类关联的，有一些是我写的：,还有这里，请注意，是一些内部的定义。
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And that first one is init this kind of interesting thing, it's two underbars, init, and two underbars. Underscores, I guess is the right way to say it, not underbars.
然后第一行代码是很有趣的东西,这是两个下划线，然后再有两个下划线，下面的划线，我认为应该这么说,而不是下划线。
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And what is it going to happen is that init is going to then apply.
它会被应用于这些参数,那么让我来给大家看个例子吧。
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So in fact what happens inside of an object-oriented system, and particularly in init Python's object-oriented system, is the following.
面向对象系统的内部,尤其是在Python的面向，对象系统的内部的过程,就是如下的，当我们调用，它会去创建一个实例。
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When I call the class definition, that is I call c point, I'm going to call it with a specific set of arguments.
来创建实例的时候，也就是调用c，point的时候，我会以一个特定的参数集来调用它,然后将要发生的就是init将会被应用。
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So, I've got an init in both cases.
好，那么我然后要在这个小小的。
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init Init creates a pointer to the instance.
然后这个方法调用了。
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I don't have to put an init in, but it's again, usually a good idea to put that in originally.
类定义内做些什么其他的东西呢？,好，在两个例子里，我都有init声明。
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Notice that that typically also defines for me what the internal variables are, what the internal characteristics of the class are going to be.
就放进去是比较好的,我写下了init声明意思就是，当你创建一个实例的时候,这就是你要进行的操作。
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When we call init, it's going to create the instance, all right, just as we said before.
好，正如我们前面所受的，但是尤其是，它会去用self来引用这个实例。
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So another way saying it again is, when I call the class definition, by default I'm going to look to see is there an init method there, and if there is, I'm going to use it.
当我调用类的定义，默认的是语言要去查看，是不是有个init的方法,如果有的话，程序就会调用它，按照惯例。
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I've got and init that says, when you create an instance, here's what you do.
我并不需要一定要有init声明，但是这是，再说一次，通常来说把init声明一开始。
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How many arguments does init take? Three.
我给了它的参数是一个x值。
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I have init.
这就是init方法。
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