def shuffle_lists_in_list(ls):
    for (i, item) in enumerate(ls):
        if isinstance(item, list):
            ls[i] = random.sample(item, len(item))
def shuffle_lists_in_list(ls):
    for (i, item) in enumerate(ls):
        if isinstance(item, list):
            ls[i] = random.sample(item, len(item))