Daemonized python interpreter

python-daemon.sh

# setup FIFO and hang python interpreter
fifo_path=$TMPDIR/"pysh-"$(date +%s)
mkfifo $fifo_path
python3 <$fifo_path &
exec 3>$fifo_path

# perform some commands
echo 'import os' >$fifo_path
cat >$fifo_path <<EOF
import json
print(json.dumps(
    {str(i): i for i in range(5)} | {"path": os.environ.get("PATH")},
    indent=4,
))
EOF

# clean up
exec 3>&-
rm $fifo_path