rpi_envsens/__init__.py

import logging
import threading
import time

DEBUG = False

try:
    from config import APP_NAME as ROOT_LOGGER_NAME
except ImportError:
    ROOT_LOGGER_NAME = 'root'

logger = logging.getLogger(ROOT_LOGGER_NAME).getChild(__name__)


class background_task(object):
    RUN_SLEEP_TIME = 2.0

    def __init__(self):
        self.__active__ = True
        self.__thread__ = threading.Thread(target=self.run, args=())
        self.__thread__.daemon = True                            # Daemonize thread
        self.__thread__.start()                                  # Start the execution

    def __run__(self):
        pass

    def run(self):
        while self.__active__:
            self.__run__()
            time.sleep(self.RUN_SLEEP_TIME)

    def close(self):
        self.__active__ = False
        self.__thread__.join()

    def __del__(self):
        self.close()