python - NLTK sentiment vader: polarity_scores(text) not working -


i trying use polarity_scores() vader sentiment analysis in nltk, gives me error:

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

i totally beginner in python. appreciate help! 

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

sentimentintensityanalyzer class. need initialize object of sentimentintensityanalyzer , call polarity_scores() method on that.

from nltk.sentiment.vader import sentimentintensityanalyzer sia sentences=["hello","why not working?!"] sid = sia() sentence in sentences:     ss = sid.polarity_scores(sentence)

you may have download lexicon file if haven't already

>>> import nltk >>> nltk.download() --------------------------------------------------------------------------- d) download   l) list    u) update   c) config   h)   q) quit --------------------------------------------------------------------------- downloader> d vader_lexicon downloader> q

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