Pygame Random Dungeon Generation

I have looked online everywhere and I am yet to find how to create a basic random dungeon generation technique.

I have been experimenting myself by randomising a list of numbers and allocating them to width height and position etc. but I just can't seem to get it working.

It would be great if someone could direct me to a website or maybe point me in the right direction, I am a little inexperienced. Thanks in advance.