key=value style command argument parser

[Gribouillis]

You can perhaps obtain this effect by tweaking argv's contents like in this example

import argparse
import re
import sys

def parse_args():
    parser = argparse.ArgumentParser(
        description="""\
        Program to illustrate the option=value way in argv.
        """,
    )
    parser.add_argument('--foo', action='store')
    args = parser.parse_args()
    print(args)


def tweakargv():
    """Replace option=value by --option=value in sys.argv"""
    for i, a in enumerate(sys.argv):
        if re.match(r"\w+[=]", a):
            sys.argv[i] = '--' + a
    
if __name__ == '__main__':
    tweakargv()
    parse_args()

Output:
λ python3 paillasse/tweakargv.py foo=bar
Namespace(foo='bar')