如何在Python中的不同模块中使用全局变量 [英] how to have global variables among different modules in Python

问题描述

我调查了Python中全局变量的作用域限于模块。但是我需要在不同模块中成为全球化的范围。有这样的事吗？我玩过 __ builtin __ 但没有运气。

感谢您！

在模块 foo ：

  joe = 5 
  

在模块 bar 中：

  from foo import joe 
 print joe 
  

请注意，这是不过建议。通过使用函数隐藏对模块变量的访问会更好。

I investigated that scope of global variables in python is limited to the module. But I need the scope to be global among different modules. Is there such a thing? I played around __builtin__ but no luck.

thanks in advance!

解决方案

You can access global variables from other modules by importing them explicitly.

In module foo:

  joe = 5

In module bar:

  from foo import joe
  print joe

Note that this isn't recommended, though. It's much better to hide access to a module's variables by using functions.

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