title: NLTK sentiment vader: polarity_scores(text) not working
body: <p>I am trying to use <code>polarity_scores()</code> from the Vader sentiment analysis in NLTK, but it gives me error: </p>
  
  <blockquote>
    <p>polarity_scores() missing 1 required positional argument: 'text'</p>
  </blockquote>
  
  <p>I am totally a beginner in Python. Appreciate your help! </p>
  
  <pre><code>from nltk.sentiment.vader import SentimentIntensityAnalyzer as sid
  sentences=["hello","why is it not working?!"]
  for sentence in sentences:
      ss = sid.polarity_scores(sentence) 
  </code></pre>