Code generated in the video can be downloaded from here:
https://github.com/bnsreenu/python_fo...

A Voronoi diagram divides the plane into separate regions where ​each region contains exactly one generating point (seed) and​ every point in a given region is closer to its seed than to any other. ​The regions around the edge of the cluster of points extend out to infinity.

This video explains Voronoi using python.