What is “argv”, and what does it do?

Question

argv

What on Earth is it!?

Edit: If you can, will you please write a line or two and explain how it works?

Answer 1

It means arguments vector and it contains the arguments passed to the program. The first one is always the program name.

For example, if you executed your Python program like so...

 $ python your_script.py --yes

...then your sys.argv will contain your_script.py and --yes.