NLTK情绪维达:polarity_scores(文本)不起作用

Question

我试图使用polarity_scores()NLTK中的Vader情绪分析,但它给了我错误:

polarity_scores()缺少1个必需的位置参数:'text'

我完全是Python的初学者.感谢您的帮助!

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是一个班级.您需要初始化一个对象SentimentIntensityAnalyzer并在其polarity_scores()上调用该方法.

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) 

您可能必须下载词典文件(如果尚未下载)

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