It sounds to me like what is being proposed amounts to essentially
"promote sys.exit to a builtin". So why not do that?
I see two options. Either:
(a) Simply let __builtins__.exit = sys.exit. Then we get:
>>> exit
<built-in function exit>
which may be enough of a clue that you type "exit()" to exit.
(b) If more handholding seems like a good idea, then:
class ExitHatch:
def __call__(self): sys.exit()
def __repr__(self): return '<Type "exit()" to exit Python.>'
__builtins__.exit = __builtins__.quit = ExitHatch()
-- ?!ng
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