Using python, daemonizing a process

问题:

Okay I have looked at python-daemon, and also at various other daemon related code recipes. Are there any 'hello world' tutorials out there that can help me get started using a python based daemonized process?

回答1:

The PEP 3143 contains several examples, the simplest one of which is:

import daemon

from spam import do_main_program

with daemon.DaemonContext():
    do_main_program()

This seems as straightforward as it gets. If there's something that's unclear, please pose specific questions.

回答2:

Using subprocess.Popen, you can launch another process that will survive your current process...

In a python console run :

import subprocess
subprocess.Popen(["/bin/sh", "-c", "sleep 500"])

Kill your console, look at existing processes, sleep is alive...