> > b = set(file('/home/sajid/python/wip/stc/2/CBR0000333')) > > > > file('PSP-CBR.dat,ray','w').writelines(itertools.ifilterfalse(b.__contains__,file('/home/sajid/python/wip/stc/2/PSP0000333'))) > > > > -- > > $ time ./cleanup_ray.py > > > > real 0m5.451s > > user 0m4.496s > > sys 0m0.428s > > > > (-: Damn! That saves a bit more time! Bravo! > >
[EMAIL PROTECTED] > Have you tried the explicit loop variant with psyco ? My experience is > that psyco is pretty good at optimizing for loop which usually results > in faster code than even built-in map/filter variant. > > Though it would just be 1 or 2 sec difference(given what you already > have) so may not be important but could be fun. The code is pretty tight and is now most likely I/O bound. If so, further speed-ups will be hard to come by (even with psyco). The four principal steps of reading, membership testing, filtering, and writing are all C coded methods which are directly linked together with no interpreter loop overhead or method lookups. Hard to beat. -- http://mail.python.org/mailman/listinfo/python-list