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# 2.7 注释

注释是写给人看的，为了方便程序的理解，可以当作是一个嵌在程序里的文档。对于计算机来说，注释会被忽略掉，不会被执行。在Python中有两种注释方法：

单行注释的话在最前面加上一个“#”就可以了。

多行注释用三个单引号或者三个双引号把需要注释的话包在其中就可以了。

![图2-19](/files/-LZoVZ91RX1AH7xE1b_t)

我们可以看到，被注释掉的语句不会被输出，而且会变成斜体。

![图2-20](/files/-LZoVP93-bvzkcatwEJe)

多行注释可以一次把中间的三条语句都注释掉，因此只输出了头尾两条语句。上图中的单引号也可以改写成双引号，但是要注意前三个引号和后三个引号的类型要一致，否则也会报错。


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