Python and PEP8 - Recommendations on breaking up long lines?
Ned Batchelder
ned at nedbatchelder.com
Thu Nov 28 12:26:11 EST 2013
On 11/28/13 9:04 AM, Tim Chase wrote:
> On 2013-11-28 03:58, Steven D'Aprano wrote:
>>> input = open(self.full_path)
>>> output = open(self.output_csv, 'ab')
>>> with input as input, output as output:
>>> ...
>>
>> That's really clever! Why didn't I think of that?
>
> Because if the 2nd output fails, the input doesn't get closed as
> it {w,sh}ould in a with-statement? :-)
D'oh, sorry. A doubly-nested with statement?
input = open(self.full_path)
with input:
output = open(self.output_csv, 'ab')
with output:
...
Of course, if you were willing to use a doubly-nested with statement,
then the original open-in-the-with form would have fit in 80 chars...
Also, I have a sneaking suspicion there's still an error case not
handled well, someone will point it out if so!
--Ned.
>
> -tkc
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