def _belongs_to_one_of_these_classes(obj, classes):
    """
    Returns true if the given object belongs to one of the classes cited
    in the list of classes provided.
    :param obj: The object to lib_test.
    :param classes: The qualifying classes.
    :return: Boolean.
    """
    for cls in classes:
        if isinstance(obj, cls):
            return True
    return False