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Groups > comp.lang.python > #104318
| From | Terry Reedy <tjreedy@udel.edu> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: breaking out of outer loops |
| Date | 2016-03-07 21:54 -0500 |
| Message-ID | <mailman.31.1457405705.15725.python-list@python.org> (permalink) |
| References | <nbl1md$1lvd$1@gioia.aioe.org> <mailman.1.1457392715.15725.python-list@python.org> <nbl2dd$1mkn$1@gioia.aioe.org> <CALvWhxuDbgE8AR+Q35hrqKhZ8Ft-n0CHUmFh8gYjtR6oG0nZ8g@mail.gmail.com> <CAPTjJmoghjqK+O_kU5a_oa8Fd9wG4eENGOQ7oYk0BADnwzW4OQ@mail.gmail.com> |
On 3/7/2016 6:49 PM, Chris Angelico wrote:
> On Tue, Mar 8, 2016 at 10:42 AM, Chris Kaynor <ckaynor@zindagigames.com> wrote:
>> And the same rough example, using an exception without a function:
>>
>> for file in files:
>> try:
>> for line in file:
>> section = line.split()
>> for section in line:
>> if sectionCorrupt:
>> raise Exception('Section corrupt') # You probably want
>> more details here, for possible manual repair. You could also have a custom
>> exception class for more control.
>> except Exception as e:
>> print('Failed to process the file {} with error {}.'.format(file,
>> str(e))) # Probably should also print the entire traceback to aid in
>> repairing errors, especially if they are due to a bug in the code, but this
>> is the rough idea.
>
> Yes, although I would more strongly suggest the custom exception
> class. In fact, the way I'd word it is: Never raise Exception, always
> a subclass. Otherwise it's too easy to accidentally catch something
> elsewhere in the code (a ValueError or TypeError or even
> AttributeError).
I would consider raising and catching StopIteration.
--
Terry Jan Reedy
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breaking out of outer loops Fillmore <fillmore_remove@hotmail.com> - 2016-03-07 18:09 -0500
Re: breaking out of outer loops Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-07 16:17 -0700
Re: breaking out of outer loops Fillmore <fillmore_remove@hotmail.com> - 2016-03-07 18:21 -0500
Re: breaking out of outer loops Chris Kaynor <ckaynor@zindagigames.com> - 2016-03-07 15:42 -0800
Re: breaking out of outer loops Chris Angelico <rosuav@gmail.com> - 2016-03-08 10:49 +1100
Re: breaking out of outer loops Terry Reedy <tjreedy@udel.edu> - 2016-03-07 21:54 -0500
Re: breaking out of outer loops Rob Gaddi <rgaddi@highlandtechnology.invalid> - 2016-03-07 23:29 +0000
Re: breaking out of outer loops Fillmore <fillmore_remove@hotmail.com> - 2016-03-07 18:40 -0500
Re: breaking out of outer loops Chris Angelico <rosuav@gmail.com> - 2016-03-08 10:47 +1100
Re: breaking out of outer loops Fillmore <fillmore_remove@hotmail.com> - 2016-03-07 19:02 -0500
Re: breaking out of outer loops Chris Angelico <rosuav@gmail.com> - 2016-03-08 11:08 +1100
Re: breaking out of outer loops Fillmore <fillmore_remove@hotmail.com> - 2016-03-07 19:13 -0500
Re: breaking out of outer loops Joel Goldstick <joel.goldstick@gmail.com> - 2016-03-07 19:21 -0500
Re: breaking out of outer loops Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-08 00:36 +0000
Re: breaking out of outer loops Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-08 03:45 +0000
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