Script python exécutable et sourceable par bash

py.sh

#!/bin/bash
## -*- python -*-
#
# This python script is callable and sourceable by bash.
#
# lint python with: flake8 --ignore=E225,E265 py.sh
# lint bash with: sed '/^## END BASH/,$d' py.sh | shellcheck -

## In bash, declare a variable script, assign value "#". In python, declare a
## variable scriptd, assign a heredoc containing the bash script.
# shellcheck disable=SC2034
script=""" "
## BEGIN BASH

# my_sh_func [ARG ...]
#   Echo arguments
#
#   my_sh_func toto
#
my_sh_func() {
    echo $*
}

if [[ ${BASH_SOURCE[0]} = $0 ]]; then
    if declare -f -- "${1-}" >&2; then
        # When $1 is a bash function, call it and exit.
        set -eux
        $*
        exit 0
    else
        # Any other argument is passed to python script.
        exec python3 ${BASH_SOURCE[0]} $*
    fi
else
    echo ${BASH_SOURCE[0]} sourced
    return 0
fi

## Assert this statement is not reached in bash.
exit 1
## END BASH
"""  # " # Close quote for bash syntax highlighting.

## Drop script variable, and begin python script as usual.
del script

import sys

print(sys.argv)

Pour toi @jpic 😍