On Mac, the pre-installed version of Python is 3.9. I also have Python 3.13, which I use with Terminal. It is at the root of my path, but ytD still searches for the integrated version.

Update Slicer's Python from 3.9 to 3.10. Based on Slicer's previous update to Python 3.9 at 64.7% readiness and Python 3.10 at a higher readiness than that, this means Slicer can consider Python 3.10 ...