You can write modules on the fly and you can test and use them later.

您可以动态地编写一些模块，并且您可以在稍后对其进行测试和使用。

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The reason you actually want to use Pyrex, however, is to write modules that run faster -- maybe a lot faster -- than pure Python can possibly run.

然而，您真正希望使用 Pyrex 的原因是它编写的模块比纯 Python 运行得更快，可能会快很多。

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Write reusable code modules that can be invoked for specific elements and attributes.

编写能够被特定的元素和属性调用的可重用代码模块。

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