 <p>You realize Python doesn't do true multi-threading as you would expect on a multi-core processor:</p> <p><a href="http://en.wikipedia.org/wiki/Global_Interpreter_Lock" rel="nofollow noreferrer">See Here</a> <a href="http://en.wikipedia.org/wiki/Python_%28programming_language%29" rel="nofollow noreferrer">And Here</a></p> <p>Don't expect those 10 things to take 1 second each. Besides, even in true multi-threading there is a little overhead associated with the threads. I'd like to add that this isn't a slur against Python.</p>