如何实现一个简单的跨平台python守护进程?

1. a windows service

pywin32

better explained elsewhere

3. os.umask
5. STDIN STDOUT STDERR DEVNULL
6. SIGTERM

finally: atexit __del__

pythonw.exe windowless version of Python

subprocess.Popen creationflags=subprocess.CREATE_NEW_PROCESS_GROUP

import subprocess

independent_process = subprocess.Popen(
    '/path/to/pythonw.exe /path/to/file.py',
    creationflags=subprocess.CREATE_NEW_PROCESS_GROUP
)

1. pickle
2. tempfile

daemoniker cross-platform API

from daemoniker import Daemonizer

with Daemonizer() as (is_setup, daemonizer):
    if is_setup:
        # This code is run before daemonization.
        do_things_here()

    # We need to explicitly pass resources to the daemon; other variables
    # may not be correct
    is_parent, my_arg1, my_arg2 = daemonizer(
        path_to_pid_file,
        my_arg1,
        my_arg2
    )

    if is_parent:
        # Run code in the parent after daemonization
        parent_only_code()

# We are now daemonized, and the parent just exited.
code_continues_here()

PEP 3143 python-daemon related daemonizing modules and implementations

daemons