text: from set import Set
  
  class Redact(object):
      def redact_words(self, words, banned_words):
          "Returns words excluding banned words"
          # words_set = set(words)
          banned_words_set = Set(banned_words)
          cleaned_words = [word for word in words if not banned_words_set.contains(word)]
          
          return cleaned_words
      
  
  if __name__ == "__main__":
      print("hello")