小编A.P*_*.P.的帖子

什么时候收集下面的python静态类变量垃圾？我期待从静态变量foo析构函数中看到消息.

class Foo(object):
    def __init__(self):
        print "Foo init running"

    def __del__(self):
        print "Destructor Foo"

class Bar(object):
    foo = Foo()
    def __init__(self):
        print "Bar init running"

    def __del__(self):
        print "Destructor Bar"

bar_obj = Bar()

输出是(Python 2.7):

Foo init running
Bar init running
Destructor Bar

我在期待:

Foo init running
Bar init running
Destructor Foo
Destructor Bar