open() and EOFError
Mark Lawrence
breamoreboy at yahoo.co.uk
Mon Jul 7 09:06:33 EDT 2014
On 07/07/2014 09:09, Chris Angelico wrote:
> On Mon, Jul 7, 2014 at 6:00 PM, Steven D'Aprano <steve at pearwood.info> wrote:
>> How do people feel about code like this?
>>
>> try:
>> name = input("Enter file name, or Ctrl-D to exit")
>> # On Windows, use Ctrl-Z [enter] instead.
>> fp = open(name)
>> except EOFError:
>> sys.exit()
>> except IOError:
>> handle_bad_file(name)
>> else:
>> handle_good_file(fp)
>
> It seems trivial in this example to break it into two try blocks:
>
> try:
> name = input("Enter file name, or Ctrl-D to exit")
> # On Windows, use Ctrl-Z [enter] instead.
> except EOFError:
> sys.exit()
> try:
> fp = open(name)
> except IOError:
> handle_bad_file(name)
> else:
> handle_good_file(fp)
>
All those extra lines to type, not on your life. Surely it would be
better written as a one liner?
--
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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