Your python script need, pythons libraries, python itself, reapy and the script. The first two can't be shared via your reaper config.
It would be more efficient to just do a Lua script.
Though you might consider working on CSV file instead of XLS, cause Lua from XLS is a bit unexplored (as CSV is just better for such things)
https://forum.cockos.com/showthread.php?t=276270