Getting references to obect instances into a list

[parent.eric.3 at gmail.com]

Hi,

I would like to get the references to objets to put in a huge data
structure (like a list or a heap for example). My objective is to use
as less memory as possible as I have to manage huge amount of entries
in my data structure and need to use the same elsewhere.

If I were coding in C++, it would be natural to do so but as I am a
newby to Python, I don't know yet how to achieve that.

Can anyone help me with that?

Regards,

- Eric