shapely examples use 'figures', what is this library?

Question

For example

https://shapely.readthedocs.io/en/latest/code/polygon.py

uses a library 'figures'. I can't seem to locate this library. There are several libraries on PyPi with figures in the name, but none seem correct

Answer 1

It's a helper library for the shapely documentation. You can find it in the shapely documentation source:

• figures.py