Python, Kodi - execute xbmc.executebuiltin('...') only once?

Question

I have written this code which sends a notification to Kodi when a certain condition is met. (When I start a movie/tv show or play music I want the language, resolution, refresh rate and sound mode to appear on the screen).

I have grouped my media in different folders.

The code is working fine but I can't fix one issue:

The line in bold where I actually send the notification xbmc.executebuiltin( 'Notification(Info, Some text)' ) stays on the screen - forever, unless I change the window or to a file which is in a different folder (then a different notification stays on the screen). Not what I want.

What is missing so the line only executes once and the notification disappears after a few seconds?

if __name__ == '__main__':
    monitor = xbmc.Monitor()

    while not monitor.abortRequested():

        def my_function_one():
            for root, dirs, files in os.walk(path_1):
                for x in dirs:
                    if condition_1 and condition_2:
                        **xbmc.executebuiltin( 'Notification(Info, Some text)' )**
                        break


        def my_function_two():
            for root, dirs, files in os.walk(path_2):
                for y in dirs:
                    if condition_3 and condition_4:
                        **xbmc.executebuiltin( 'Notification(Info, Some other text)' )**
                        break


        if monitor.waitForAbort(5):
            break

    my_function_one()
    my_function_two()

update: I have tried adding True/False statements to my code but the notification is still not disappearing after a few seconds - as it should:

displayed = False
def my_function_one():
    for root, dirs, files in os.walk(path_1):
        for x in dirs:
            if condition_1 and condition_2:
                if not displayed:
                    displayed = True
                    xbmc.executebuiltin( 'Notification(Info, Some text)' )
                    break