exit from ipython

Question

I like IPython a lot for working with the python interpreter. However, I continually find myself typing exit to exit, and get prompted "Type exit() to exit."

I know I can type Ctrl-D to exit, but is there a way I can type exit without parentheses and get IPython to exit?

Update: Thanks to nosklo, this can be easily done by adding the following line to the main() function in your ipy_user_conf.py:

# type exit to exit
ip.ex("type(exit).__repr__ = lambda s: setattr(s.shell, 'exit_now', True) or ''") 

Solution 1

>>> import sys
>>> class Quitter(object):
...     def __repr__(self):
...         sys.exit()
... 
>>> exit = Quitter()

You can use it like this:

>>> exit

EDIT:

I dont use ipython myself, but it seems to have some wierd sys.exit handler. The solution I found is as follows:

In [1]: type(exit).__repr__ = lambda s: setattr(s.shell, 'exit_now', True) or ''

Usage:

In [2]: exit

Solution 2

%exit, or %Exit, if you have confirmation enabled and want to skip it. You can alias it to e.g. %e by putting execute __IPYTHON__.magic_e = __IPYTHON__.magic_exit in your ipythonrc.

Solution 3

With iPython 6.2.1, you can simply type exit to exit the interpreter:

$ ipython
Python 3.5.2 (default, Nov 23 2017, 16:37:01) 
Type 'copyright', 'credits' or 'license' for more information
IPython 6.2.1 -- An enhanced Interactive Python. Type '?' for help.
In [1]: exit
$ 

Comments

[JS.]

I also have (had) your problems using 'exit' because of the same muscle memory. For anyone new to IPython (or looking for a quicker way), hitting <ctrl>-D twice is faster. Just don't hit it three times or you'll be logged out of your (linux) shell as well.

[pythonBOI]

Thanks, but I really want to literally type "exit". Because it is stuck in muscle memory.

[Robert Kern]

This doesn't quite work with IPython. It has its own Quitter class which calls the appropriate exit method on the actual IPShell instance. But the general idea is correct.

[nosklo]

@Robert Kern: Okay, found an ipython solution.

[halloleo]

%exit or %Exit are no line magic functions under IPython version 1.1.0. So using IPython 1.1.0 this answer does not work for me at all.

[Cat Plus Plus]

@halloleo My heart bleeds for you on the account of answer from 5 years ago no longer being relevant. exit works OOB on recent IPython versions and this entire question is unnecessary.