May I please know how to program this question in python step by step? Thank you.

Here is the cats.txt:

You are tasked with writing a program that will tape files together in a tab separated format Your program will accept multiple filenames through command line and it is required to open the files. If a file does not exist then then the program should not proceed to stitch any file contents together and the program should output: Unable to load file The program will be ran in this format: python3 stickytape.py You can assume you strictly stitch lines together and spaced by a tab (t) If in the event that two files do now have the same amount of lines, an empty string ( should be a placeholder where there is usually an entry Examples: Example 1 Cannot Load File python3 stickytape.py file_does_not_exist) Unable to load file file does not exist Example 2 Two Flesthnticayrape y Mainecoon Labrador Siamese BoarderCollie Ginger Staffy