The function definitions are targeted to a specific domain.

函数定义针对特定的领域。

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For example, in Time1. py there is no obvious connection between the class definition and the function definitions that follow.

例如，在Time1 . py里面，类的定义和后面的函数定义就没有啥明显的练习。

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This encloses the self variable with the function definitions, so it is still available when the browser calls the functions, as shown in Listing 6.

这将 self 变量封闭在函数定义中，所以当浏览器调用函数时它仍然可用，见清单 6。

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