Python DBus handle hibernate, sleep and resume

dbus_handler.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
__author__ = 'xanter'

#from datetime import datetime
import signal
import time
import dbus
import gobject
import urllib2
from dbus.mainloop.glib import DBusGMainLoop


def sigterm_handler(_signo, _stack_frame):
    print(_signo)
    gobject.idle_add(quit)

def tryopen():
    try:
       urllib2.urlopen("http://ya.ru/")
       print("success open")
    except Exception as e:
        print(e)


def handle_sleep(mode):
    # mode = args[0]
    if mode:
        print("Sleep")
        tryopen()
    else:
        print("Resume")
        time.sleep(10)
        tryopen()
    #print "%s    PrepareForSleep%s" % (datetime.now().ctime(), args)

DBusGMainLoop(set_as_default=True)     # integrate into gobject main loop
bus = dbus.SystemBus()                 # connect to system wide dbus
bus.add_signal_receiver(               # define the signal to listen to
    handle_sleep,                      # callback function
    'PrepareForSleep',                 # signal name
    'org.freedesktop.login1.Manager',  # interface
    'org.freedesktop.login1'           # bus name
)

signal.signal(signal.SIGINT, sigterm_handler)
signal.signal(signal.SIGTERM, sigterm_handler)
# signal.signal(signal.SIGKILL, sigterm_handler)

loop = gobject.MainLoop()
loop.run()