Efficient grep using Python?

[sf]

The point is that when you have 100,000s of records, this grep becomes
really slow?

Any comments?

Thats why I looked for python :)


> that would be
>
> grep -vf B A
>
> and it is a rare use of grep, indeed.
> -- 
> TZOTZIOY, I speak England very best.
> "Be strict when sending and tolerant when receiving." (from RFC1958)
> I really should keep that in mind when talking with people, actually...