How do you create a daemon in Python?

Question

Searching on Google reveals x2 code snippets. The first result is to this code recipe which has a lot of documentation and explanation, along with some useful discussion und

Answer 1

Here's my basic 'Howdy World' Python daemon that I start with, when I'm developing a new daemon application.

#!/usr/bin/python
import time
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/foo.pid'
        self.pidfile_timeout = 5
    def run(self):
        while True:
            print("Howdy!  Gig'em!  Whoop!")
            time.sleep(10)

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

Note that you'll need the python-daemon library. You can install it by:

pip install python-daemon

Then just start it with ./howdy.py start, and stop it with ./howdy.py stop.