From: Peter Otten on
Gabor Urban wrote:

> I am building a nested data structure with the following compontens:


> Any idea is wellcome.

The error messages suggest that you are using classes where you should be
using class instances, but you don't provide the code where this problem

The code you do give looks like a very literal and incomplete conversion
from Java. Rather than go into the details I suggest that you have a look at
the Tutorial (and PEP 8) before you proceed.