title: Keeping some of the elements in a list
body: <p>I have been trying to figure out how to find specific words in a list then move these to a new list. Say i have  :</p>
  
  <pre><code>a = ['a','b','c','d','e']
  </code></pre>
  
  <p>and I only want to have a, c and e. Is it possible to do this without using .remove() ?</p>