Variable Scope for Scripts

[QueenSvetlana]

Try to avoid global variables  at all cost,is a good rule.

The way I've declared file_name and files_to_backup are not in a global way, correct? The problem is these two variables might be used else where in my script, keeping them hidden inside a function will make it more difficult to use. You could return a dictionary of items, but it seems unnecessarily complicated.

This python script could as easily have been a bash/powershell script, and in those you don't worry about variable scope. The only way to hide a variable is inside a function.