How do you limit the # of lines Read?

[Paul McNett]

koutoo 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?

Assuming s is a file-like object:

for idx, line in enumerate(s):
         if idx > 2:
                 break
         print idx, line


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pkm ~ http://paulmcnett.com