Hénon Attractor in Python3, Pygame. The Hénon Attractors are governed by the following system of difference equations: $$x_{n+1} = 1 - a x_{n}^2 + y_{n}$$ $$y_{n+1} = b x_{n}$$ Click here for more information on the Hénon Attractor. Requirements pygame time How to use: Run the python file main.py. Press return to start. Press q or close the window to quit.