title: Dtype work in FROM but not IMPORT
body: <p>I swear I read almost all the "FROM vs IMPORT" questions before asking this.</p>
  
  <p>While going through the NumPy tutorial I was using:</p>
  
  <pre><code>import numpy as np
  </code></pre>
  
  <p>but ran into trouble when declaring dtype of a matrix like:</p>
  
  <pre><code>a = np.ones((2,3),dtype=int32)
  </code></pre>
  
  <p>I kept getting "NameError: name 'int32' is not defined."  I am using Python v3.2, and am following the tentative tutorial that goes along with it.  I used:</p>
  
  <pre><code>from numpy import *
  a = ones((2,3),dtype=int32)
  </code></pre>
  
  <p>Which works.  Any insight as to why this is would be much appreciated.
  Thank you in advance!</p>