How to remove subset from a file efficiently?

[bonono at gmail.com]

fynali wrote:
> [bonono]
> > Have you tried the explicit loop variant with psyco ?
>
> Sure I wouldn't mind trying; can you suggest some code snippets along
> the lines of which I should try...?
>
>     [fynali]
>     > Needless to say, I'm utterly new to python and my programming
>     > skills & know-how are rudimentary.
>
> (-:
>
> --
> fynali

just add :

import psyco
psyco.full()

to the beginning of the code from Fredrik for 2.2(the one using dict
and list comprehension). You system may not have the psyco module
though.