Needs urgent help and please don't judge if you find it pretty basic that everyone knows but i don't know

This is my first internship and my task is to write a script that convert Input file containing mix of pii and non pii to non pii output file. I did the code but my mentor says he want all it in single file and prod ready so that it can be run on anyone's system . But the the person who is using this script only see it is main working that he will enter some things and script works accordingly. And what i did is that i kept the whole functions and code in one file and then call these functions via main function in another notebook. But my mentor said he needs a single notebook then I put all t