hello_daemon.py

#!/usr/bin/python
import time

# sudo apt-get install python-daemon
from daemon import runner

class App():
    def __init__(self):
        self.stdin_path = '/dev/null'
        self.stdout_path = '/dev/tty'
        self.stderr_path = '/dev/tty'
        self.pidfile_path =  '/tmp/zzzfoo.pid'
        self.pidfile_timeout = 5
    def run(self):
        while True:
            print("I'm still up! see you in 10 seconds")
            time.sleep(10)

app = App()
daemon_runner = runner.DaemonRunner(app)
daemon_runner.do_action()