On Jan 17, 12:42 am, George Sakkis <[EMAIL PROTECTED]> wrote:
> On Jan 17, 12:01 am, Scott David Daniels <[EMAIL PROTECTED]>
> wrote:
>
>
>
> > [EMAIL PROTECTED] wrote:
> > > Hi there,
> > > I'm struggling to find a sensible way to process a large chuck of
> > > data--line by line, but also having the ability to move to subsequent
> > > 'next' lines within a for loop. I was hoping someone would be willing
> > > to share some insights to help point me in the right direction. This
> > > is not a file, so any file modules or methods available for files
> > > parsing wouldn't apply.
>
> > > I can iterate over each line by setting a for loop on the data object;
> > > no problem. But basically my intension is to locate the line "Schedule
> > > HOST" and progressively move on to the 'next' line, parsing out the
> > > pieces I care about, until I then hit "Total", then I resume to the
> > > start of the for loop which locates the next "Schedule HOST".
>
> > if you can do:
>
> > for line in whatever:
> > ...
>
> > then you can do:
>
> > source = iter(whatever)
> > for intro in source:
> > if intro.startswith('Schedule '):
> > for line in source:
> > if line.startswith('Total'):
> > break
> > process(intro, line)
>
> > --Scott David Daniels
> > [EMAIL PROTECTED]
>
> Or if you use this pattern often, you may extract it to a general
> grouping function such
> ashttp://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/521877:
Sorry, google groups fscked up with the auto linewrapping (is there a
way to increase the line length?); here it is again:
import re
for line in iterblocks(source,
start = lambda line: line.startswith('Schedule HOST'),
end = lambda line: re.search(r'^\s*Total',line),
skip_delim = False):
process(line)
George
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