Horacius ReX wrote: > and regardless of the speed, what do you think would be the best > method to do this ?
Without more information about the contents of the file and who's reading them, we can't say more. if the reader is not under your control & doesn't deal with deletion-marks or anything such in the file, you can't do anything but really delete the lines. If you can control it, it depends on how you process the file - has it fixed line length, or not, and so forth. Because you need to use seek to position the file-pointer to the proper location in the file to write a deletion mark, but to do so you of course need to determine it first - and that will need to be done in a two-pass apporach most probably. Diez -- http://mail.python.org/mailman/listinfo/python-list