python - NLTK 情感维达 : polarity_scores(text) not working

Question

我正在尝试使用 NLTK 中 Vader 情绪分析的 polarity_scores()，但它给了我错误:

polarity_scores() missing 1 required positional argument: 'text'

我完全是 Python 的初学者。感谢你的帮助!

from nltk.sentiment.vader import SentimentIntensityAnalyzer as sid
sentences=["hello","why is it not working?!"]
for sentence in sentences:
    ss = sid.polarity_scores(sentence) 

Answer 1

SentimentIntensityAnalyzer 是一个类。您需要初始化 SentimentIntensityAnalyzer 的对象并调用 polarity_scores() 方法。

from nltk.sentiment.vader import SentimentIntensityAnalyzer as SIA
sentences=["hello","why is it not working?!"]
sid = SIA()
for sentence in sentences:
    ss = sid.polarity_scores(sentence) 

如果您还没有下载词典文件，您可能需要下载

>>> import nltk
>>> nltk.download()
---------------------------------------------------------------------------
d) Download   l) List    u) Update   c) Config   h) Help   q) Quit
---------------------------------------------------------------------------
Downloader> d vader_lexicon
Downloader> q