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Re: Awsome Python - chained exceptions

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From Serhiy Storchaka <storchaka@gmail.com>
Subject Re: Awsome Python - chained exceptions
Date Fri, 15 Feb 2013 20:51:21 +0200
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On 14.02.13 08:39, Steven D'Aprano wrote:
> Here is one example of using raise to re-raise an exception you have just
> caught:
>
> import errno
> paths = ["here", "there", "somewhere else"]
> for location in paths:
>      filename = os.path.join(location, "prefs.ini")
>      try:
>          f = open(filename)
>      except IOError as e:
>          if e.errno != errno.ENOENT:  # File not found.
>              raise
>

In Python 3.3:

     try:
         f = open(filename)
     except FileNotFound:
         pass

But not all errnos have special OSError subclasses.

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Thread

Awsome Python - chained exceptions Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-12 06:15 +0000
  Re: Awsome Python - chained exceptions Terry Reedy <tjreedy@udel.edu> - 2013-02-12 10:13 -0500
  Re: Awsome Python - chained exceptions Zero Piraeus <schesis@gmail.com> - 2013-02-12 14:01 -0400
    Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-12 19:01 -0800
      Re: Awsome Python - chained exceptions Ian Kelly <ian.g.kelly@gmail.com> - 2013-02-14 00:00 -0700
        Re: Awsome Python - chained exceptions alex23 <wuwei23@gmail.com> - 2013-02-14 16:10 -0800
    Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-12 19:01 -0800
  Re: Awsome Python - chained exceptions Ethan Furman <ethan@stoneleaf.us> - 2013-02-12 10:15 -0800
  Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-12 18:47 -0800
    Re: Awsome Python - chained exceptions Michael Torrie <torriem@gmail.com> - 2013-02-12 21:18 -0700
    Re: Awsome Python - chained exceptions Chris Angelico <rosuav@gmail.com> - 2013-02-13 17:58 +1100
      Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-13 08:14 -0800
        Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-13 08:19 -0800
        Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-13 08:19 -0800
        Re: Awsome Python - chained exceptions Chris Angelico <rosuav@gmail.com> - 2013-02-14 09:10 +1100
          Re: Awsome Python - chained exceptions Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-14 06:39 +0000
            Re: Awsome Python - chained exceptions Serhiy Storchaka <storchaka@gmail.com> - 2013-02-15 20:51 +0200
        Re: Awsome Python - chained exceptions Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2013-02-14 13:01 +0100
          Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-14 18:56 -0800
            Re: Awsome Python - chained exceptions Chris Angelico <rosuav@gmail.com> - 2013-02-15 17:18 +1100
              Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-14 23:51 -0800
                Re: Awsome Python - chained exceptions Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2013-02-15 10:00 +0100
              Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-14 23:51 -0800
                Re: Awsome Python - chained exceptions alex23 <wuwei23@gmail.com> - 2013-02-17 17:35 -0800
                Re: Awsome Python - chained exceptions Dave Angel <davea@davea.name> - 2013-02-17 20:48 -0500
                Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-17 21:51 -0800
                news.gmane.org (was Re: Awsome Python - chained exceptions Terry Reedy <tjreedy@udel.edu> - 2013-02-18 01:10 -0500
                Re: news.gmane.org (was Re: Awsome Python - chained exceptions rurpy@yahoo.com - 2013-02-18 09:12 -0800
                Re: news.gmane.org (was Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-18 18:32 +0000
                Re: news.gmane.org (was Re: Awsome Python - chained exceptions Terry Reedy <tjreedy@udel.edu> - 2013-02-18 17:45 -0500
                Re: news.gmane.org (was Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-18 06:30 +0000
                Re: news.gmane.org (was Re: Awsome Python - chained exceptions Kwpolska <kwpolska@gmail.com> - 2013-02-18 16:27 +0100
                Re: Awsome Python - chained exceptions alex23 <wuwei23@gmail.com> - 2013-02-18 18:18 -0800
                Re: Awsome Python - chained exceptions rurpy@yahoo.com - 2013-02-19 07:52 -0800
                Re: Awsome Python - chained exceptions rusi <rustompmody@gmail.com> - 2013-02-19 09:14 -0800
                Re: Awsome Python - chained exceptions alex23 <wuwei23@gmail.com> - 2013-02-19 22:57 -0800
                Re: Awsome Python - chained exceptions Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-20 22:50 +1100
                Re: Awsome Python - chained exceptions Rotwang <sg552@hotmail.co.uk> - 2013-02-20 16:00 +0000
                RE: Awsome Python - chained exceptions "J. Marc Edwards" <marc.edwards@nimbisservices.com> - 2013-02-20 11:08 -0500
                Re: Awsome Python - chained exceptions rurpy@yahoo.com - 2013-02-20 08:13 -0800
                Re: Awsome Python - chained exceptions Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-02-20 18:49 -0500
                Re: Awsome Python - chained exceptions Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-02-20 18:47 -0500
      Re: Awsome Python - chained exceptions Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-13 08:14 -0800
    Re: Awsome Python - chained exceptions Michael Torrie <torriem@gmail.com> - 2013-02-13 00:22 -0700

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