title: How to replace parts of strings in a list
body: <p>i am not so familiar with python, and i don't know how to do this..  So I have a list that looks like this:</p>
  
  <pre><code>animal_id = ['id01', 'id02', 'id03', 'id04', 'id05']
  </code></pre>
  
  <p>and I would like to make a new list from the list above, using string manipulation. and the new list should look like this:</p>
  
  <pre><code>animal_list = ['a01', 'a02', 'a03', 'a04', 'a05']
  </code></pre>
  
  <p>i think i would have to make a for loop, but i dont know what methods (in string)  to use to achieve the desired output</p>