How to use the langdetect.detector_factory.DetectorFactory function in langdetect

def init_factory():
    global _factory
    if _factory is None:
        _factory = DetectorFactory()
        _factory.load_profile(PROFILES_DIRECTORY)

def _init_langdetect():
    """
    Initialize language detection.
    """
    # Imports
    import langdetect.detector_factory
    from langdetect.detector_factory import DetectorFactory

    # Init factory (to load the profiles at startup)
    langdetect.detector_factory.init_factory()

    # Language detection algorithm is non-deterministic, we might get different results every time you run it.
    # To enforce consistent results, call following code before the first language detection
    DetectorFactory.seed = 0