daemonize is a library for writing system daemons in Python. It has some bits from daemonize.sourceforge.net. It is distributed under MIT license.
It is tested under following Python versions:
- 2.6
- 2.7
- 3.3
You can install it from Python Package Index (PyPI):
$ pip install daemonize
from time import sleep
from daemonize import Daemonize
pid = "/tmp/test.pid"
def main():
while True:
sleep(5)
daemon = Daemonize(app="test_app", pid=pid, action=main)
daemon.start()Daemonize object's constructor understands the optional argument keep_fds which contains a list of FDs which should not be closed. For example:
import logging
from daemonize import Daemonize
pid = "/tmp/test.pid"
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
logger.propagate = False
fh = logging.FileHandler("/tmp/test.log", "w")
fh.setLevel(logging.DEBUG)
logger.addHandler(fh)
keep_fds = [fh.stream.fileno()]
def main():
logger.debug("Test")
daemon = Daemonize(app="test_app", pid=pid, action=main, keep_fds=keep_fds)
daemon.start()