删除停用词和string.punctuation

Question

我无法弄清楚为什么这不起作用:

import nltk
from nltk.corpus import stopwords
import string

with open('moby.txt', 'r') as f:
    moby_raw = f.read()
    stop = set(stopwords.words('english'))
    moby_tokens = nltk.word_tokenize(moby_raw)
    text_no_stop_words_punct = [t for t in moby_tokens if t not in stop or t not in string.punctuation]

    print(text_no_stop_words_punct)

看着输出我有这个:

[...';', 'surging', 'from', 'side', 'to', 'side', ';', 'spasmodically', 'dilating', 'and', 'contracting',...]

似乎标点符号仍在那里.我做错了什么？

Answer 1

它必须是and,而不是or:

if t not in stop and t not in string.punctuation

要么:

if not (t in stop or t in string.punctuation):

要么:

all_stops = stop | set(string.punctuation)
if t not in all_stops:

后一种解决方案是最快的.