Quoting Sean Perry <[EMAIL PROTECTED]>:

> for line in sys.stdin.readlines():
>  # handle the line
> 
> I tend to use xreadlines() which does not read the entire input at once.

xreadlines() these days just does 'return self', I believe.  File objects are
their own iterators; you can just do:

for line in sys.stdin:
    # do stuff

-- 
John.
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