How do you limit the # of lines Read?

[John Machin]

On Sep 19, 6:59 am, kou... at hotmail.com wrote:
> I am working on a loop for my code and was wondering if there is a way
> to limit the number of lines read through?  I'd hate to cut the test
> file in order to run the code in the testing phase.  Can you add a
> value in the parenthesis of the readline() function?
>
> t = string.readline()  # Limit this somehow?

*STRING*.readline() ????