Splitting a file from specific column content
MRAB
python at mrabarnett.plus.com
Sun Jan 22 15:55:49 EST 2012
On 22/01/2012 19:58, Arnaud Delobelle wrote:
> On 22 January 2012 16:09, MRAB<python at mrabarnett.plus.com> wrote:
>> On 22/01/2012 15:39, Arnaud Delobelle wrote:
> [...]
>>> Or more succintly (but not tested):
>>>
>>>
>>> sections = [
>>> ("3", "section_1")
>>> ("5", "section_2")
>>> ("\xFF", "section_3")
>>> ]
>>>
>>> with open(input_path) as input_file:
>>> lines = iter(input_file)
>>> for end, path in sections:
>>> with open(path, "w") as output_file:
>>> for line in lines:
>>> if line>= end:
>>> break
>>> output_file.write(line)
>>>
>> Consider the condition "line>= end".
>>
>> If it's true, then control will break out of the inner loop and start
>> the inner loop again, getting the next line.
>>
>> But what of the line which caused it to break out? It'll be lost.
>
> Of course you're correct - my reply was too rushed. Here's a
> hopefully working version (but still untested :).
>
> sections = [
> ("3", "section_1")
> ("5", "section_2")
> ("\xFF", "section_3")
> ]
>
[snip]
Missing commas! :-)
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