title: Split strings that are in a numpy.ndarray
body: <p>I have a (66180L,) numpy.ndarray, which consists of strings in each row.</p>
  
  <p>I want to go inside the rows, accessing the strings, and split them for every space in that string.</p>
  
  <p>I really only want words and numbers. </p>
  
  <p>How to do this?</p>
  
  <p>Example:</p>
  
  <pre><code>sample[1,] = '[Hello] my name is Jay 12 1 2!!'
  </code></pre>
  
  <p>output: </p>
  
  <pre><code>['Hello', 'my', 'name', 'is', 'Jay', '12', '1', '2']
  </code></pre>