The Python Argparse Tutorial - Argparse HowTo post provides a practical example of how to parse command line parameters and options using the argparse module.
Knowing how to add command line paramenters and options to Python scripts is a must-have skill, since it enables them to better adapt to customers' needs, allowing them to enable or disable specific script features, or providing information on the operational environment structure, such as specific directory paths different from the default ones.
As a professional, you are supposed to always add command line arguments support to your scripts, so to make them always fit to the user-specific scenarios.