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try/except/finally

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  try/except/finally Frank B <fbicknel@gmail.com> - 2014-06-06 10:30 -0700
    Re: try/except/finally Roy Smith <roy@panix.com> - 2014-06-06 13:39 -0400
      Re: try/except/finally Frank B <fbicknel@gmail.com> - 2014-06-06 10:47 -0700
        Re: try/except/finally Ned Batchelder <ned@nedbatchelder.com> - 2014-06-06 14:22 -0400
        Re: try/except/finally Ethan Furman <ethan@stoneleaf.us> - 2014-06-07 15:49 -0700
        Re: try/except/finally Chris Angelico <rosuav@gmail.com> - 2014-06-08 09:47 +1000
          Re: try/except/finally Roy Smith <roy@panix.com> - 2014-06-07 20:12 -0400
            Re: try/except/finally Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-06-08 02:10 +0100
              Re: try/except/finally Roy Smith <roy@panix.com> - 2014-06-07 21:32 -0400
              Re: try/except/finally Marko Rauhamaa <marko@pacujo.net> - 2014-06-08 10:12 +0300
                Re: try/except/finally Joshua Landau <joshua@landau.ws> - 2014-06-08 18:57 +0100
                Re: try/except/finally Ian Kelly <ian.g.kelly@gmail.com> - 2014-06-08 12:07 -0600
                Re: try/except/finally Ian Kelly <ian.g.kelly@gmail.com> - 2014-06-08 12:02 -0600
          Re: try/except/finally Rustom Mody <rustompmody@gmail.com> - 2014-06-07 20:58 -0700
            Re: try/except/finally Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2014-06-10 09:27 +0200
              Re: try/except/finally Marko Rauhamaa <marko@pacujo.net> - 2014-06-10 12:07 +0300
              Re: try/except/finally Rustom Mody <rustompmody@gmail.com> - 2014-06-10 05:06 -0700
                Re: try/except/finally Skip Montanaro <skip@pobox.com> - 2014-06-10 13:11 -0500
                  Re: try/except/finally Rustom Mody <rustompmody@gmail.com> - 2014-06-10 19:01 -0700
              Re: try/except/finally Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-06-10 19:14 +0100
                Re: try/except/finally Grant Edwards <invalid@invalid.invalid> - 2014-06-10 18:48 +0000
                  Re: try/except/finally Chris Angelico <rosuav@gmail.com> - 2014-06-11 06:37 +1000
                    Re: try/except/finally Roy Smith <roy@panix.com> - 2014-06-10 16:38 -0400
                      Re: try/except/finally Chris Angelico <rosuav@gmail.com> - 2014-06-11 06:43 +1000
                      Re: try/except/finally Ethan Furman <ethan@stoneleaf.us> - 2014-06-10 13:43 -0700
                      Re: try/except/finally Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-06-10 22:59 +0100
                    Re: try/except/finally Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-06-11 00:00 +0000
                      Re: try/except/finally Chris Angelico <rosuav@gmail.com> - 2014-06-11 10:12 +1000
                        Re: try/except/finally Roy Smith <roy@panix.com> - 2014-06-10 20:22 -0400
                      Re: try/except/finally Tim Delaney <timothy.c.delaney@gmail.com> - 2014-06-11 10:40 +1000
                      Re: try/except/finally Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-06-11 01:53 +0100
                      Re: try/except/finally Chris Angelico <rosuav@gmail.com> - 2014-06-11 11:00 +1000
                      Re: try/except/finally Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-06-11 02:06 +0100
                      Re: try/except/finally alister <alister.nospam.ware@ntlworld.com> - 2014-06-11 08:35 +0000
                        Re: try/except/finally Roy Smith <roy@panix.com> - 2014-06-11 08:50 -0400
                Re: try/except/finally alister <alister.nospam.ware@ntlworld.com> - 2014-06-10 19:02 +0000
      Re: try/except/finally Joshua Landau <joshua@landau.ws> - 2014-06-08 19:05 +0100
    Re:try/except/finally Dave Angel <davea@davea.name> - 2014-06-07 21:59 -0500
      Re: try/except/finally Philip Shaw <jnufcvyvuc@tznvy.pbz> - 2014-06-09 09:13 +0000
        Re: try/except/finally Marko Rauhamaa <marko@pacujo.net> - 2014-06-09 12:40 +0300
          Re: try/except/finally Shiyao Ma <i@introo.me> - 2014-06-10 00:23 +0800
          Re: try/except/finally Skip Montanaro <skip@pobox.com> - 2014-06-09 11:56 -0500

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#73048

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It would be great if someone could discuss it from the viewpoint of
bytecode. e.g., how the stack is popped, etc.


2014-06-09 17:40 GMT+08:00 Marko Rauhamaa <marko@pacujo.net>:

> Philip Shaw <jnufcvyvuc@tznvy.pbz>:
>
> > OTOH, it could just be that Guido didn't think of banning [return from
> > finally] when exceptions were first added and doesn't want to
> > introduce an incompatability later.
>
> You don't have to ban all nonsensical things. Most guns allow you to
> shoot yourself in the foot, even those with static type checking.
>
>
> Marko
> --
> https://mail.python.org/mailman/listinfo/python-list
>



-- 

吾輩は猫である。ホームーページはhttp://introo.me。

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#73051

On Mon, Jun 9, 2014 at 11:23 AM, Shiyao Ma <i@introo.me> wrote:
>
> It would be great if someone could discuss it from the viewpoint of bytecode. e.g., how the stack is popped, etc.

BITD, you couldn't have try/except/finally. You could have try/except
or try/finally. You could nest the two, which is what people used to
do (back when we had to walk uphill both ways to school in a
snowstorm). As I recall, it wasn't implemented from the start because
the benefit of having try/except/finally didn't outweigh the
difficulty of implementation. Someone finally buckled down and
implemented it. To understand it, I think you might have to read the
source and PEP 341.

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