如何在Python中列出所有实例化对象？

Question

我有一个长期运行的进程,可能会有资源泄漏.如何在我的环境中获取所有实例化对象(可能只有特定类)的列表？

Answer 1

试试gc.get_objects():

>>> import gc
>>> 
>>> class Foo: pass
... 
>>> f1 = Foo()
>>> 
>>> [o for o in gc.get_objects() if isinstance(o, Foo)]
[<__main__.Foo instance at 0x2d2288>]
>>> 
>>> f2 = Foo()
>>> 
>>> [o for o in gc.get_objects() if isinstance(o, Foo)]
[<__main__.Foo instance at 0x2d2288>, <__main__.Foo instance at 0x2d22b0>]