How to read/process command line arguments?

Question

I am originally a C programmer. I have seen numerous tricks and \"hacks\" to read many different arguments.

What are some of the ways Python programmers can do this

Answer 1

If you need something fast and not very flexible

main.py:

import sys

first_name = sys.argv[1]
last_name = sys.argv[2]
print("Hello " + first_name + " " + last_name)

Then run python main.py James Smith

to produce the following output:

Hello James Smith