On Thu, Jun 6, 2013 at 10:14 PM, Dave Angel <da...@davea.name> wrote: > If you're planning on having the files densely populated (meaning no gaps in > the numbering), then you could use a binary search to find the last one. > Standard algorithm would converge with 10 existence checks if you have a > limit of 1000 files.
Or, if you can dedicate a directory to those files, you could go even simpler: dataFile = open('filename0.0.%d.json'%len(os.listdir()), 'w') The number of files currently existing equals the number of the next file. ChrisA -- http://mail.python.org/mailman/listinfo/python-list