Re: The Most Diabolical Python Antipattern

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From	Mark Lawrence <breamoreboy@yahoo.co.uk>
Subject	Re: The Most Diabolical Python Antipattern
Date	Sat, 31 Jan 2015 01:28:51 +0000
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On 30/01/2015 08:10, Mark Lawrence wrote:
> On 30/01/2015 06:16, Marko Rauhamaa wrote:
>> Ian Kelly <ian.g.kelly@gmail.com>:
>>
>>> At least use "except Exception" instead of a bare except. Do you
>>> really want things like SystemExit and KeyboardInterrupt to get turned
>>> into 0?
>>
>> How about:
>>
>> ==============================
>>      try:
>>          do_interesting_stuff()
>>      except ValueError:
>>          try:
>>              log_it()
>>          except:
>>              pass
>>          raise
>> ==============================
>>
>> Surprisingly this variant could raise an unexpected exception:
>>
>> ==============================
>>      try:
>>          do_interesting_stuff()
>>      except ValueError:
>>          try:
>>              log_it()
>>          finally:
>>              raise
>> ==============================
>>
>> A Python bug?
>>
>>
>> Marko
>>
>
> It depends on the Python version that you're running - I think!!!  See
> https://www.python.org/dev/peps/pep-3134/
> https://www.python.org/dev/peps/pep-0409/
> https://www.python.org/dev/peps/pep-0415/ and finally try (groan :)
> https://pypi.python.org/pypi/pep3134/
>

http://bugs.python.org/issue23353 looks like fun and references PEP3134 
for anybody who's interested.

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence

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Re: The Most Diabolical Python Antipattern Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-29 15:51 -0700
  Re: The Most Diabolical Python Antipattern Marko Rauhamaa <marko@pacujo.net> - 2015-01-30 08:16 +0200
    Re: The Most Diabolical Python Antipattern Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-01-30 08:10 +0000
      Re: The Most Diabolical Python Antipattern Marko Rauhamaa <marko@pacujo.net> - 2015-01-30 11:02 +0200
        Re: The Most Diabolical Python Antipattern Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-30 02:17 -0700
        Re: The Most Diabolical Python Antipattern Marko Rauhamaa <marko@pacujo.net> - 2015-01-30 12:00 +0200
          Re: The Most Diabolical Python Antipattern Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-30 08:21 -0700
            Re: The Most Diabolical Python Antipattern Marko Rauhamaa <marko@pacujo.net> - 2015-01-30 17:30 +0200
              Re: The Most Diabolical Python Antipattern Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-30 08:42 -0700
                Re: The Most Diabolical Python Antipattern Marko Rauhamaa <marko@pacujo.net> - 2015-01-30 17:56 +0200
                Re: The Most Diabolical Python Antipattern Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-30 09:38 -0700
              Re: The Most Diabolical Python Antipattern Chris Angelico <rosuav@gmail.com> - 2015-01-31 02:55 +1100
    Re: The Most Diabolical Python Antipattern Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-30 02:11 -0700
    Re: The Most Diabolical Python Antipattern Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-01-31 01:28 +0000

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