[Python] argparse parse arbitary number groups of arguments

I have this snippet for illustrative purpose that doesn't work at all.

#!/usr/bin/env python3

import argparse

parser = argparse.ArgumentParser()

parser.add_argument("--action", nargs="+")
parser.add_argument("--number", nargs="+", default=1)
parser.add_argument("--some-parameter-to-action", nargs="+", required=True)

args = parser.parse_args()


I'm trying to parse an arbitrary number of action parameters, each action should have an associated number and some-parameter-to-action, potentially with a default value. Passing another action should create a new one and the following --number and --some-parameter-to-action flags should be associated with the action that preceeded it.

Examples, I want to be able to pass all or a subset of these in a single invocation of the script:

--action say -n 3 --some-parameter-to-action foo
--action bla --some-parameter-to-action no
--action nothing # error


Is something like this possible in python?

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