title: Append a string to a list of unicode strings
body: <p>What I've tried:</p>
  
  <pre><code>&gt;&gt; abcd = [u'abcd']
  &gt;&gt; abcd_ef = abcd + 'ef'
  &gt;&gt; abcd_ef
  
  [u'abcd', 'e', 'f']
  </code></pre>
  
  <p>What I'd like:</p>
  
  <pre><code>&gt;&gt; abcd = [u'abcd']
  &gt;&gt; abcd_ef = **MAGIC ???**
  &gt;&gt; abcd_ef
  
  [u'abcd', 'ef']
  </code></pre>
  
  <p>Hopefully I made that clear enough!</p>