iterating over a file with two pointers

[Peter Otten]

nikhil Pandey wrote:

> On Wednesday, September 18, 2013 5:14:10 PM UTC+5:30, Peter Otten wrote:

> I want to iterate in the inner loop by reading each line till some
> condition is met.how can i do that. Thanks for this code.

That's not what I had in mind when I asked you to

>> describe your actual requirement in more detail.

Anyway, change

[...]
>>                 f, g = tee(f)
>>                 for inner in islice(g, 3):
>>                     print "   ", inner,
>>                 break
[...]

to

                f, g = tee(f)
                for inner in g:
                    if some condition:
                        break
                    print "   ", inner,
                break

in my example.