[Python-Dev] a quit that actually quits (original) (raw)

Fredrik Lundh fredrik at pythonware.com
Wed Dec 28 11:40:33 CET 2005

Jeremy Kloth wrote:

Ka-Ping Yee wrote: > I'd be happy with having Python exit when the user types just plain > 'exit' without parentheses, but only in that case, not others. > However, i'm starting to think that may be impossible to implement. > I can't think of any way to make 'print exit' not exit, for example.

OK, here's one: def quithook(obj, exit=builtins.exit, displayhook=sys.displayhook): if obj is exit: raise SystemExit displayhook(obj) sys.displayhook = quithook It does, however, fall into the whole issue of chaining that Skip brought up earlier.

as well as various introspection-related issues:

>>> import foo
>>> cb = foo.getcallback()
>>> # let's see what it is
>>> cb

$

(by the way, it's "builtin", not "builtins". the former is a module, the latter a CPython implementation detail)

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