Problems with Abstract Data Types in Python

[MavapeGZ]

I'm working with my own implementation of generic types of data structures such as Queues, Lists, Stacks...
But I don't know how to make it work properly.

If I have a class MyStack for example, why if I write "MyStack" in the visualizer window I get lots of nodes in the vis, not only the ones of my class?

Should I create a json file to work with this?

[Klummel69]

Create a function that passes your data type to the Visualizer as a json string. (Important: not a json object).

See #240

[Klummel69]

A graph would be useful for your queue.
The Python demos only work if a json string is passed. This is not always mentioned.

See graph.py: