title: Python code simplification? One line, add all in list
body: <p>I'm making my way through project Euler and I'm trying to write the most concise code I can.  I know it's possible, so how could I simplify the following code.  Preferably, I would want it to be one line and not use the int->string->int conversion.</p>
  
  <p>Question: What is the sum of the digits of the number 2<sup>1000</sup>?</p>
  
  <p>My answer:</p>
  
  <pre><code>&gt;&gt;&gt; i=0
  &gt;&gt;&gt; for item in [int(n) for n in str(2**1000)];i+=item
  </code></pre>