在python中导入类时显示警告 [英] Show warning when a class is imported in python

问题描述

我在其他模块中有一个类，并且要在导入该类时显示一个DeprecationWarning.正确的方法是什么?

I have a class in a different module and I want to show a DeprecationWarning when that class is imported. What will be the right way to do so?

模块1包含-

class Test:
    pass

模块2包含-

from module1 import Test #this line should show a DeprecationWarning.

推荐答案

导入将执行类定义，因此将警告放在此处:

The import will execute the class definition, so put the warning there:

class Test:
    raise DeprecationWarning('This class is deprecated')

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