python - tidsstyrning

import threading
import datetime
import time

class Threading(object):
    """ Threading example class
    The run() method will be started and it will run in the background
    until the application exits.
    """

    def __init__(self, interval=60):
        """ Constructor
        :type interval: int
        :param interval: Check interval, in seconds
        """
        self.interval = interval
        thread = threading.Thread(target=self.run, args=())
        thread.daemon = True                            # Daemonize thread
        thread.start()                                  # Start the execution

    def run(self):
        """ Method that runs forever """
        while True:
            ab = Checker().checkRefresh()
            if ab:
                print('res')

            time.sleep(self.interval)

class Checker():
    def __init__(self):    
        self.checkRefresh= False
        run = Threading()

    def checkRefresh(self):
        your_time = datetime.datetime(2021, 2, 18, 15, 0, 0, 0)
        diff = your_time - datetime.datetime.now()
        if diff.total_seconds() > 0:
            return True