title: A pythonic way to insert a space before capital letters
body: <p>I've got a file whose format I'm altering via a python script.  I have several camel cased strings in this file where I just want to insert a single space before the capital letter - so "WordWordWord" becomes "Word Word Word".</p>
  
  <p>My limited regex experience just stalled out on me - can someone think of a decent regex to do this, or (better yet) is there a more pythonic way to do this that I'm missing?</p>