title: AttributeError: 'str' object has no attribute 'remove', how to fix?
body: <p>I have created a function that returns the following error:</p>
  
  <pre><code>original_alphabet.remove(value)
  AttributeError: 'str' object has no attribute 'remove'
  </code></pre>
  
  <p>I'm not how to fix the error, any help is appreciated. This is my code:</p>
  
  <pre><code>def keyword_cipher_alphabet(keyword):
   original_alphabet = "abcdefghijklmnopqrstuvwxyz"
  
   for value in original_alphabet:
    if value in keyword:
     original_alphabet.remove(value)
  
   keyword_alphabet = ""
   for value in original_alphabet:
    keyword_alphabet += value 
  
   user_keyword = ""
   for value in keyword:
    user_keyword += value
  
   result = user_keyword + keyword_alphabet
  
   return result.upper()
  </code></pre>