Simple coding exercise to imitate The Matrix Rain effect - a digital shower of symbols!

Inspiration came from the actual films: https://en.wikipedia.org/wiki/The_Matrix_(franchise)

A few hints taken from this Coding Train tutorial from Emily Xie: https://www.youtube.com/watch?v=S1TQCi9axzg

But I choose to write it in Python with pygame (rather than P5 processing)