title: Normalization of tokens python
body: <p>I need to transforms a token (e.g "Doesn't") to a lower case. If there is a negation ”n’t” in the end of the token, it should remove it.</p>
  
  <p>I did come so far but it's wrong. How do I proceed?</p>
  
  <pre><code>def normalize(token):
  
      list = ["Doesn't", "Don't"]
  
      if token in list:
  
       print(list.lower())
  
      print(list.replace("n't", ""))
  
      return list
  
      print("Doesn't")
  </code></pre>