def compatibility_mode():
    """
    Use this function to turn on the compatibility mode. The compatibility
    mode is used to improve compatibility with Pyinotify 0.7.1 (or older)
    programs. The compatibility mode provides additional variables 'is_dir',
    'event_name', 'EventsCodes.IN_*' and 'EventsCodes.ALL_EVENTS' as
    Pyinotify 0.7.1 provided. Do not call this function from new programs!!
    Especially if there are developped for Pyinotify >= 0.8.x.
    """
    setattr(EventsCodes, 'ALL_EVENTS', ALL_EVENTS)
    for evname in globals():
        if evname.startswith('IN_'):
            setattr(EventsCodes, evname, globals()[evname])
    global COMPATIBILITY_MODE
    COMPATIBILITY_MODE = True