def check_none_documents(package_leaflets_raw):
    """
    "None" document - where each section in a document is None

    :param package_leaflets_raw: array of leaflets
    :return: Number of such documents
    """

    COUNT_NONE_DOCUMENTS = 0

    for leaflet in package_leaflets_raw:
        if leaflet.section1 is None and leaflet.section2 is None and leaflet.section3 is None \
                and leaflet.section4 is None and leaflet.section5 is None and leaflet.section6 is None:
            COUNT_NONE_DOCUMENTS += 1
            print("Document --- ", leaflet.id, " has all sections - NONE")

    return COUNT_NONE_DOCUMENTS