title: Convert hex-string to string using binascii
body: <p>By hex-string, it is a regular string except every two characters represents some byte, which is mapped to some ASCII char.</p>
  
  <p>So for example the string</p>
  
  <pre><code>abc
  </code></pre>
  
  <p>Would be represented as</p>
  
  <pre><code>979899
  </code></pre>
  
  <p>I am looking at the <a href="http://docs.python.org/library/binascii.html" rel="nofollow">binascii</a> module but don't really know how to take the hex-string and turn it back into the ascii string.
  Which method can I use?</p>
  
  <p>Note: I am starting with <code>979899</code> and want to convert it back to <code>abc</code></p>