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Date: Sun, 10 Apr 2011 19:49:45 -0400
Subject: Re: Python program termination and exception catching
From: Jerry Hill <malaclypse2@gmail.com>
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:2962

On Sun, Apr 10, 2011 at 3:25 PM, Jason Swails <jason.swails@gmail.com> wrot=
e:
>
> Hello everyone,
>
> This may sound like a bit of a strange desire, but I want to change the w=
ay in which a python program quits if an exception is not caught.=C2=A0 The=
 program has many different classes of exceptions (for clarity purposes), a=
nd they're raised whenever something goes wrong.=C2=A0 Most I want to be fa=
tal, but others I'd want to catch and deal with.
>
> Is there any way to control Python's default exit strategy when it hits a=
n uncaught exception (for instance, call another function that exits "diffe=
rently")?

When an exception is raised and uncaught, the interpreter calls
sys.excepthook.=C2=A0You can replace sys.excepthook with your own function.
=C2=A0See=C2=A0http://docs.python.org/library/sys.html#sys.excepthook

If your program is threaded, you may need to look at this bug:
http://bugs.python.org/issue1230540. =C2=A0It describes a problem with
replacing sys.excepthook when using the threading module, along with
some workarounds.

There's a simple example of replacing excepthook here:
http://code.activestate.com/recipes/65287/

--
Jerry