title: remove all list elements starting with a hash
body: <p>i have a list with elements, some of which start with "#". how can i remove those elements?
  I tried:</p>
  
  <pre><code>content = [x for x in content[][0] if x != "#"]
  </code></pre>
  
  <p>but:</p>
  
  <pre><code>content[][0]
  </code></pre>
  
  <p>seems to be not valid. What is the best way to do this?</p>