title: Get system language in ISO 639 (3-letter codes) in Python
body: <p>Could someone tell me a way to get a system language in the <a href="http://www.w3.org/WAI/ER/IG/ert/iso639.htm" rel="nofollow noreferrer">ISO 639 (3 letter code)</a> format in a cross platform way?</p>
  
  <p>Thanks.</p>
  
  <p>I found a <a href="http://www.google.com/codesearch/p?hl=en#BpbMiH2xT_E/pub/FreeBSD/distfiles/hachoir-core-0.9.0.tar.gz|RzjpTZgjwM0/hachoir-core-0.9.0/hachoir_core/iso639.py&amp;q=iso%20639%20lang:python" rel="nofollow noreferrer">list</a> of three letter country codes.</p>