Python in Bash for script delivery

py_in_bash.sh

#!/usr/bin/env bash
set -a
command -v python3 >/dev/null 2>&1 || {
    echo >&2 "Python3 required.  Aborting."
    exit 1
}

MYSTRING="Do something in bash"
export $MYSTRING

python3 - <<EOF
import os
pyShellString = os.environ['MYSTRING']
myPyString = "Printing python var"
print(myPyString)
print("print from os.env: ", pyShellString)

EOF

set +a
echo "Back to bash"