fynali wrote: > $ cat cleanup_use_psyco_and_list_compr.py > #!/usr/bin/python > > import psyco > psyco.full() > > postpaid_file = open('/home/sajid/python/wip/stc/2/PSP0000333') > outfile = open('/home/sajid/python/wip/stc/2/PSP-CBR.dat.psyco', > 'w') > > barred = {} > > for number in open('/home/sajid/python/wip/stc/2/CBR0000333'): > barred[number] = None # just add it as a key > > outfile.writelines([number for number in postpaid_file if number > not in barred]) > > postpaid_file.close(); outfile.close() > > -- > $ time ./cleanup_use_psyco_and_list_compr.py > > real 0m39.638s > user 0m5.532s > sys 0m0.868s > > This was run on my machine (w/ Python 2.4.1), can't install psyco on > the actual server at the moment. > > I guess using generators & newer Python is indeed faster|better. > > -- > fynali um, strange, so psyco is slower than not using it ?
you may try to expand the list comprehension to : for number in postpaid_file: if number not in barred: outfile.writelines(number) -- http://mail.python.org/mailman/listinfo/python-list