Thank you for the explanation and references, Ferdinand - Will read.
I was installing packages like numpy, etc, and tinycss2 must have been installed as a dependancy to one of those. No webserver plans
Looking to automate/speed importing, plotting, animating data.

Curious.
I'm installing python packages, and noticed...

/Applications/Maxon Cinema 4D 2025/resource/modules/python/libs/python311.macos.framework/python

/Applications/Maxon Cinema 4D 2025/c4dpy.app/Contents/MacOS/c4dpy

What are the differences between these two?
When should I use one over the other?

After installing a few packages, I did a diff of the two, and it was just wheel and tinycss2, and a point version difference in setuptools.

Not optimal, but would having two different startup drives/partitions/OS's on one system help?
https://support.apple.com/en-us/118282