How to write a command line utility?

Question

Python

You need to write a converter.py console utility that supports command line arguments.

python convert.py [--csv2parquet | --parquet2csv <src-filename> <dst-filename>] | [--get-schema <filename>] | [--help]

I can write a python file where all this will be executed, but how to make a command line utility out of this file?
That is, I know python and the pandas library, but how to write a console utility?
What are the steps I need to take to complete this task?

Answer 1

https://docs.python.org/3/library/argparse.html

Answer 2

https://click.palletsprojects.com/en/8.0.x/