title: python map string split list
body: <p>I am trying to map the <code>str.split</code> function to an array of string. namely, I would like to split all the strings in a string array that follow the same format. Any idea how to do that with <code>map</code> in python? For example let's assume we have a list like this:</p>
  <pre><code>a = ['2011-12-22 46:31:11','2011-12-20 20:19:17', '2011-12-20 01:09:21']
  </code></pre>
  <p>want to split the strings by space ( <code>split(&quot; &quot;)</code>) using map to have a list as:</p>
  <pre><code>[['2011-12-22', '46:31:11'], ['2011-12-20', '20:19:17'], ['2011-12-20', '01:09:21']]
  </code></pre>