sugar-toolkit-gtk3/sugar/session/LogWriter.py

import os
import sys
import dbus
import gobject

class LogWriter:
	def __init__(self, application):
		self._application = application
		bus = dbus.SessionBus()
		proxy_obj = bus.get_object('com.redhat.Sugar.Logger', '/com/redhat/Sugar/Logger')
		self._logger = dbus.Interface(proxy_obj, 'com.redhat.Sugar.Logger')

	def start(self):
		if os.environ.has_key('SUGAR_USE_CONSOLE'):
			sys.stdout = self
			sys.stderr = self

	def write(self, s):
		gobject.idle_add(self._write, s)			

	def _write(self, s):
		self._logger.log(self._application, s)
		return False