@cvp thanks so much! My interface is slightly different, and doesn’t have the lovely New script option (though it may be in the Templates folder of my file browser). I’ve been playing around with it and found a few things out before I saw there actually were (helpful!) responses to my exasperated message. One of the things I picked up is that, at least on my version of Pythonista (it appears it can switch between 2.7 and 3.x), in the upper right corner of the screen there is what looks like an inbox with a large plus sign in it, which opens the same “New” menu as the plus sign from the file browser.
My apologies - I am so new and ignorant of what most of code world is comprised of. I only just learned that Pythonista is only an IDE for Python; it isn’t the programming language itself. That seems big, but if it’s all gone to hell in the next couple of weeks, there are some cheap PCs out there which I’ll be able to get one of and start again from there. Thanks again, much appreciated.