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Groups > comp.lang.python > #11965

Re: try... except with unknown error types

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In article <7xty9ahb84.fsf@ruckus.brouhaha.com>,
 Paul Rubin <no.email@nospam.invalid> wrote:

> It's a retail application that would cause some business disruption and
> a pissed off customer if the program went down.  Also it's in an
> embedded box on a customer site.  It's not in Antarctica or anything
> like that, but it's a few towns over, and someone would have to drive
> there (probably through heavy traffic) if something went wrong that
> power cycling the box couldn't fix.

I would do something like this:

try:
   do_some_network_stuff()
except IOError:
   do_normal_recovery()
except Exception:
   call_home()
   do_some_other_recovery()

You are right, in an embedded/unattended application, you don't want to 
ever crash.  If you ever get an error that you don't understand, you 
have no choice but to do the best you can to recover.  I would also 
generate some kind of alert back to home base to tell somebody to take a 
look at it and make sure things are fine.

I would expect that the whole application is wrapped in some kind of 
watchdog timer which will do a hard reset of the entire system.

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Thread

try... except with unknown error types Yingjie Lin <Yingjie.Lin@mssm.edu> - 2011-08-19 15:09 -0400
  Re: try... except with unknown error types John Gordon <gordon@panix.com> - 2011-08-19 19:14 +0000
    Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-20 06:13 +1000
      Re: try... except with unknown error types John Gordon <gordon@panix.com> - 2011-08-19 20:24 +0000
        Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-20 06:45 +1000
          Re: try... except with unknown error types Seebs <usenet-nospam@seebs.net> - 2011-08-20 05:46 +0000
        Re: try... except with unknown error types John Nagle <nagle@animats.com> - 2011-08-20 13:15 -0700
      Re: try... except with unknown error types Paul Rubin <no.email@nospam.invalid> - 2011-08-20 12:18 -0700
        Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-21 06:14 +1000
          Re: try... except with unknown error types Paul Rubin <no.email@nospam.invalid> - 2011-08-21 11:26 -0700
            Re: try... except with unknown error types Chris Angelico <rosuav@gmail.com> - 2011-08-21 20:17 +0100
              Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-22 10:30 +1000
                Re: try... except with unknown error types Chris Angelico <rosuav@gmail.com> - 2011-08-22 01:41 +0100
                Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-22 14:01 +1000
                Re: try... except with unknown error types Paul Rubin <no.email@nospam.invalid> - 2011-08-23 00:21 -0700
                Re: try... except with unknown error types Chris Angelico <rosuav@gmail.com> - 2011-08-23 09:26 +0100
                Re: try... except with unknown error types gene heskett <gheskett@wdtv.com> - 2011-08-23 04:43 -0400
                Re: try... except with unknown error types Paul Rubin <no.email@nospam.invalid> - 2011-08-23 10:43 -0700
                Re: try... except with unknown error types Chris Angelico <rosuav@gmail.com> - 2011-08-23 10:07 +0100
                Re: try... except with unknown error types John Nagle <nagle@animats.com> - 2011-08-31 21:22 -0700
            Re: try... except with unknown error types Ethan Furman <ethan@stoneleaf.us> - 2011-08-21 12:22 -0700
            Re: try... except with unknown error types Terry Reedy <tjreedy@udel.edu> - 2011-08-21 15:52 -0400
              Re: try... except with unknown error types Chris Torek <nospam@torek.net> - 2011-08-31 21:01 +0000
                Re: try... except with unknown error types Stefan Krah <stefan-usenet@bytereef.org> - 2011-09-09 23:41 +0200
                Re: try... except with unknown error types Nobody <nobody@nowhere.com> - 2011-09-10 10:33 +0100
                Re: try... except with unknown error types Peter Otten <__peter__@web.de> - 2011-09-10 12:17 +0200
            Re: try... except with unknown error types Roy Smith <roy@panix.com> - 2011-08-21 17:14 -0400
            Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-22 10:25 +1000
              Re: try... except with unknown error types Roy Smith <roy@panix.com> - 2011-08-21 22:09 -0400
            Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-23 18:33 +1000

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