Using python and argparse, the user could input a file name with -d as the flag.
parser.add_argument(\"-d\", \"--dmp\", default=None)
Howev
Simple solution: argparse considers a space filled string as a single argument if it is encapsulated by quotation marks.
This input worked and "solved" the problem:
-d "C:\SMTHNG\Name with spaces\MORE\file.csv"
NOTICE: argument has "" around it.