next line (data parsing)

[Scott David Daniels]

robleachza at gmail.com 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
Scott.Daniels at Acm.Org