title: What should I do first? Decrypt or Decompress? Python
body: <p>I'm trying to decrypt Bloomberg data files that I know are DES encrypted.</p>
  
  <p><code>FileName = 'comdty_option_namr.out.gz.enc'</code></p>
  
  <p>What is the right order to do things: Open the file and decompress and then decrypt or vice-versa?</p>