See my other comment in the thread. I would argue that anything that uses arcane dynamic stuff in python should be renamed to .dpy and the vast majority of the commonly used constructs retain .py

The issue in HN threads like this is that everyone is out to promote their own favorite language or their favorite python framework that uses dynamic stuff. The majoritarian and hacker-ethos of python don't always line up.

Like Chris Lattner was saying on a recent podcast, he wrote much of Swift at home on nights/weekends over 18 months. We need someone like that do this for spy.