input: from typing import Dict
  
  def sentiment_analyzer(text: str) -> Dict[str, float]:
      """Analyze the sentiment of a given text and return the polarity scores.
      >>> sentiment_analyzer("I love programming so much!")
      {'neg': 0.0, 'neu': 0.241, 'pos': 0.759, 'compound': 0.8439}
      >>> sentiment_analyzer("This is a disappointing experience.")
      {'neg': 0.561, 'neu': 0.439, 'pos': 0.0, 'compound': -0.254}
      """
output:     from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer
      analyzer = SentimentIntensityAnalyzer()
      sentiment = analyzer.polarity_scores(text)
      return sentiment