def append_list_to_list_or_item(items1, items2):
    """
    Append a list or a single item to a list or a single item
    :param items1: The list (or item) to append to
    :param items2: The list (or item) to be appended
    :return: The appended list
    """
    if type(items1) is not list:
        items1 = [items1]
    if type(items2) is not list:
        items2 = [items2]

    return items1 + items2