Question about garbage collection

[Skip Montanaro]

> I do have several circular references. My experience is that if I do not
> take some action to break the references when closing the session, the
> objects remain alive. Below is a very simple program to illustrate this.
>
> Am I missing something? All comments appreciated.

Python has normal reference counting, but also has a cyclic garbage
collector. Here's plenty of detail about how it works:

https://devguide.python.org/internals/garbage-collector/index.html

Skip