shell script with Python argparse

parse_args.sh

#!/usr/bin/env bash

set -eu

# Parse arguments
# ===============

parse_args() {
    local args=`mktemp` parser=$1; shift
    python3 -c "$parser" $@ 3>$args
    args=`cat $args; rm $args`
    [ "$args" ] || exit
    eval $args
}

parse_args '
import argparse, os
parser=argparse.ArgumentParser()
parser.add_argument("-t", "--test-case", required=True, choices=["IOMMU-22"])
parser.add_argument("-o", "--output", help="output directory")
args = parser.parse_args()
print(*(f"{k}=\"{v}\"" for k, v in vars(args).items()), file=os.fdopen(3, "w"))
' $@


# Init
# ====

echo $test_case
echo $output