Bugs item #1173637, was opened at 2005-03-30 16:37
Message generated for change (Comment added) made by rhettinger
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Matt Chaput (mchaput)
Assigned to: Nobody/Anonymous (nobody)
Summary: quit should quit
Initial Comment:
When the user types "quit" in the interpreter, instead
of quitting the program gives him or her a lecture on
the "proper" way to quit.
This is very obnoxious.
Since the interpreter obviously understands the "quit"
command, it should just quit, dammit.
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>Comment By: Raymond Hettinger (rhettinger)
Date: 2005-04-01 13:13
Message:
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class quit:
def __repr__(self):
return "Type quit() to exit the interpreter"
def __call__(self):
sys.exit()
Requiring the parentheses is not a big deal as long as there
is an advisory where they are omitted.
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Comment By: Armin Rigo (arigo)
Date: 2005-04-01 06:12
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This discussion keeps coming up time and again. sjoerd's trick has been tried
a few times already, until people implementing it realized that trying to
display the builtins dict (directly or indirectly) would quit the interpreter!
'quit' cannot just be a synonym for 'sys.exit' either, because typing 'quit'
would just print '<built-in function quit>', which is worse than the current
situation in term of expliciteness.
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Comment By: Sjoerd Mullender (sjoerd)
Date: 2005-04-01 06:04
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Something like this instead of the current quit should do
the trick:
class Quit:
def __repr__(self):
import sys
sys.exit(0)
quit = Quit()
del Quit
The problem with the Raymond's suggestion is that you need
to type parentheses.
But of course, this does get a little magical...
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Comment By: Raymond Hettinger (rhettinger)
Date: 2005-04-01 01:14
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'quit' and 'exit' currently show-up in a dir() of__builtins__.
If the OP's suggestion is accepted, it should probably be
implemented just like a builtin:
def quit():
sys.exit()
That approach is not at all magical and still allows shadowing
(quit=2, etc.)
What we have now is an annoying wart.
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Comment By: Ilya Sandler (isandler)
Date: 2005-03-31 23:35
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I am not sure adding quit to interpreter is such a good idea:
Right now quit is treated as an ordinary (non-keyword)
identifier...
(with a bit of magic: if quit is not defined then lecture
the user :-))...
E.g now you can do this:
>>> quit=2
>>> quit
2
Would you want to disallow this usage when quit becomes a
"magic word"?
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Comment By: Michael Hudson (mwh)
Date: 2005-03-31 04:49
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I'm not so sure typing quit should quit -- that doesn't seem like Python to
me (how would you implement it?)
Having quit be the same object as sys.exit seems sensible.
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Comment By: Raymond Hettinger (rhettinger)
Date: 2005-03-30 17:11
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I concur!
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