py3

def dec1(f):
        def wrap():
            return " dec1 " + f()
        return wrap

def dec2(f):
        def wrap():
            return " dec2 " + f()
        return wrap

@dec1
@dec2
def kek():
    return "kek"

print(kek())

dec1  dec2 kek

def chackBlackList(message):
    if on_message(message) == False or message.chat.id in black_list:
        return False

black_list = []

content_types = ['text', 'audio', 'document', 'game', 'photo', 'sticker', 'video', 'video_note',
                 'voice', 'contact', 'location', 'venue', 'new_chat_members', 'left_chat_member', 'invoice',
                 'successful_payment',
                 'connected_website', 'migrate_to_chat_id',
                 'migrate_from_chat_id']

users = defaultdict(list)


def chackBlackList(message):
    if on_message(message) == False or message.chat.id in black_list:
        return False


@bot.message_handler(func=chackBlackList, content_types=content_types)
def blackList(message):
    print('In black list')


def on_message(message):
    id = message.from_user.id
    min_datetime = time.time() - 60
    users[id] = [date for date in users[id] if date >= min_datetime]
    if len(users[id]) < 20:
        users[id].append(message.date)
    else:
        return False


@bot.message_handler(commands=['start'])
def start(message):
    print('start')