post_punctuation = []
for words in ns['isi']:
    #words = "".join([char for char in text if char not in string.punctuation])
    words = re.sub(r'http[s]?(?:[a-z]|[0-9]|[$-_@.&+]|[!*\(\),]|(?:%[0-9a-f][0-9a-f]))+', "", words) #website
    words = re.sub(r'[-.,""? !.:;()//|0-9]', " ", words) #tanda baca dan angka
    words = re.sub(r'(?:@[\w_]+)', "", words) #akun
    words = re.sub(r'[(^(:\(|:\))+$]', "", words) #emoticon
    words = re.sub(r'RT[" "]|RW[" "]|CC', "", words) #RT
    words = re.sub(r'(?:\#+[\w_]+[\w\'_\-]*[\w_]+)', "", words) #hashtag
    words = re.sub(r'\n|  +|[[]]', " ", words)
    if len(words) > 0:
        post_punctuation.append(words)
post_punctuation