Where you can modify IDLE:

"getfilename" of "runscript.py": Right before "if autosave
and filename:", you can define your own filename for the case
that "not filename" is True. This way you can generate a new
filename there, and the user can just save a new (yet unnamed)
file without the hassle of having to think about a filename!

"writefile" of "iomenu.py": At the end of the try block you
can add additioncal code to save a copy of the file (with a
name that includes the current timestamp) to a separate backup
directory. Now, if you mess up, you can find previous versions
in that directory. (Who needs a version control system?)

"_setup_dialog(self)" in IDLE 3.11: Three calls to "_setup_dialog"
is everything that keeps IDLE 3.11 from running under Python
3.9. Ok, some dialogs may not appear as intended, but you probably
are not going to need them ...

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