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Groups > comp.lang.python > #52037

Re: Sort lines in a plain text file alphanumerically

Date 2013-08-06 08:29 -0400
From Devyn Collier Johnson <devyncjohnson@gmail.com>
Subject Re: Sort lines in a plain text file alphanumerically
References <520058D7.10105@Gmail.com> <CAN1F8qVU4wPHT=gMA1x6vpp0ccyxwPjiPBCLBvK3=T2S2dj9Sw@mail.gmail.com> <5200D210.9030003@Gmail.com> <CAPTjJmqMLYXNGEnEzi0u=g6uu0apz0BabOGgftAYdDN0XcQF4w@mail.gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.249.1375792198.1251.python-list@python.org> (permalink)

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On 08/06/2013 06:52 AM, Chris Angelico wrote:
> On Tue, Aug 6, 2013 at 11:38 AM, Devyn Collier Johnson
> <devyncjohnson@gmail.com> wrote:
>>      with open('/home/collier/pytest/sort.TXT') as file:
>>          sorted(file, key=str.casefold, reverse=True)
>>
>>
>> Thanks for the advice Joshua. I find these tips very useful. However, how
>> would I close the files, or would they close after the "with" construct is
>> complete?
>
> That's the whole point of 'with'. It calls open(), then calls
> __enter__, and it guarantees to call __exit__ before executing any
> code following the with block. With a file object, __exit__ will close
> the file.
>
> ChrisA

Thanks! Now I see why using "with" is a better way to write the code.

DCJ

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Re: Sort lines in a plain text file alphanumerically Devyn Collier Johnson <devyncjohnson@gmail.com> - 2013-08-06 08:29 -0400

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