title: python 3.4.1 replacing part of a string
body: <p>I found out about the .replace(), but it works in 2.7.8, but I need it (or something similar), to work in 3.4.1. So I have...</p>
  
  <pre><code>message = ("hello")
  message.replace("l", "t")
  </code></pre>
  
  <p>and I'm looking to get...</p>
  
  <pre><code>message = hetto
  </code></pre>
  
  <p>I know when it changes to hetto it makes no sense, but it is an example.</p>
  
  <p>I tried:</p>
  
  <pre><code> message = ("l")
   message.replace("l", "i")
  </code></pre>
  
  <p>and I still get:</p>
  
  <pre><code>message = l
  </code></pre>