Error installing Python on macOS Ventura

[CAM-Gerlach]

Or more relevantly, see this thread (that I remembered but couldn’t find before):

Is there a recent Mac install issue?

In the last few days, three people have mailed webmaster@python.org (which is explicitly not a “support channel”, but whatever…) saying they can’t install on a Mac. Nobody’s provided details - all three sent a screenshot of the utterly useless Mac installer screen that says “The installer encountered an error”, with no details at all. Not able to tell if this is unique to the new batch of releases that just dropped, because, again, no details; however the timing seems curious. I don’t see any…