title: SyntaxError: Non-ASCII character '\xa3' in file when function returns '£'
body: <p>Say I have a function:</p>
  
  <pre><code>def NewFunction():
      return '£'
  </code></pre>
  
  <p>I want to print some stuff with a pound sign in front of it and it prints an error when I try to run this program, this error message is displayed:</p>
  
  <pre class="lang-none prettyprint-override"><code>SyntaxError: Non-ASCII character '\xa3' in file 'blah' but no encoding declared;
  see http://www.python.org/peps/pep-0263.html for details
  </code></pre>
  
  <p>Can anyone inform me how I can include a pound sign in my return function? I'm basically using it in a class and it's within the <code>'__str__'</code> part that the pound sign is included.</p>