The Processing Java and p5 websites showcase online examples (see here and here), the same examples included with the Processing IDE.
Python Mode’s example page is bare 
I’ve been messing around with pyp5js for transcribing Processing.py files to p5.js. I’ve created a proof-of-concept static site generator that builds the web-pages for Processing.py examples:
http://pyde.tabreturn.com | source code
It has its limitations, and it needs more work. But this seems like a neat way to populate the missing examples page. Is there anybody familiar with the Processing.py website who might quickly assess if this is a solution?
(I’m also planning to design a Python mode cheetsheet, which could be a useful addition to the Processing.py website)