title: Python convert datetime string to date
body: <p>I have this string (It's come from a variable. as a example, st_date)</p>
  
  <pre><code>'2015-01-28 03:00:00' 
  </code></pre>
  
  <p>and I want to parse the date and convert to type:date </p>
  
  <pre><code>datetime.date 2015-01-28 
  </code></pre>
  
  <p>from it.. How could I do that?</p>