类被执行而没有创建对象？

由 jsed发布于 2020-05-23 23:08:08

我想了解python中类的以下行为：

class A:
    print("I am in class")

2020-05-23 23:08:08

发生这种情况是因为Python执行了类体中的所有代码。

If you want print("I am in class") to run only when you create an instance, try defining your class this way and see how the behaviour changes:

class A:
     def __init__(self):
         print("I am in class A")

Just to add on, I believe the answers to this previous question can give you more details: Why does a class' body get executed at definition time?

这家伙很懒，什么都没留下