Which Python library would allow me to display certain geometrical shapes based on a set of predefined simple rules

Here is a set of simple rules:

And here is the output once this set of rules has been applied:

Please recommend a simple python library or a simple way that would allow me to use python to calculate and visualize such computations.

Please provide a beginner programmer friendly (easily comprehensible) answer.

I would use two for loops.
The outer loop goes through the lines, the inner loop goes from left to right.

Since I like the indexing I would use numpy arrays of desired dimension.

For plotting you could use imshow. It takes directly the numpy 2D Array.