Python argument parsing for bash scripts

py-args-for-bash.sh

#!/bin/sh

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VARS=$(python3 - "$@" << EOF
import argparse
import shlex
parser = argparse.ArgumentParser(prog="$0")

# Add arguments here
# parser.add_argument('--foo-bar')

args = parser.parse_args()
for k, v in vars(args).items():
    print("{}={}".format(k, shlex.quote(str(v))))
EOF
)
if echo "$VARS" | grep -q "^usage:"; then
  echo "$VARS"
  exit 1
fi
eval $VARS

# use arguments here
# echo "$foo_bar"