Sumary I want a script to save all input arguments to a text file in such a format that I can re-run the script using fromfile_prefix_chars with that file. This is to allow for easy reproducability and store the arguments that were used to generate certain data. I have a very brittle and incomplete implementation. […]

I’m using
ArgumentParser
in python and giving users the option to add their own functions to my script. For that, I’m giving them a function that generates data that gets used in argparse’s
add_argument()
function. I noticed that add_argument’s signature is
add_argument(self, *args, **kwargs)
but when looking at the documentation in vscode I can see all the different arguments it can get (action, nargs, const, default, etc.). How does python do it? As far as I know when you give the user **kwargs it is shown as **kwargs and that’s it.

How to determine 3 scenarios using the same switch -f in the same script using argparse, say script is called script.py