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I have just written a script that is intended to be run 24/7 to update some files. However, if it takes 3 minutes to update one file, then it would take 300 minutes to update 100 files.
Is it possible to run n instances of the script to manage n separate files to speed up the turnaround time?
Yes it is possible. Use the multiprocessing module to start several concurrent processes. This has the advantage that you do not run into problems because of the Global Interpreter Lock and threads as is explained in the manual page. The manual page includes all the examples you will need to make your script execute in parallel. Of course this works best if the processes do not have to interact, which your example suggests.