input: Write a function to determine whether a given sentence is an 'affirmative' sentence or a 'negative' sentence by identifying negation words. The function should return "Affirmative" if no negation words are found, otherwise return "Negative".
  def isAffirmativeorNegative(sentence):
      negationwords = findNegation(sentence)
      if len(negationwords)==0: 
          return "Affirmative" 
      else: 
          return "Negative"
  assert isAffirmativeorNegative("He always comes late but I dont mind.") == "Negative"
  assert isAffirmativeorNegative("She is always on time.") == "Affirmative"
  assert isAffirmativeorNegative("They never forget their keys.") == "Negative"
  assert isAffirmativeorNegative("I will attend the meeting.") == "Affirmative"
  assert isAffirmativeorNegative("I am not going to the party.") == "Negative"
output: def isAffirmativeorNegative(sentence):
      negationwords = ["not", "never", "dont", "no", "none", "nobody", "nothing", "nowhere", "neither", "nor", "hardly", "scarcely", "barely", "rarely", "seldom"]
      for word in sentence.split():
          if word.lower() in negationwords:
              return "Negative"
      return "Affirmative"