title: Subtract seconds from datetime in python
body: <p>I have an int variable that are actually seconds (lets call that amount of seconds <code>X</code>). I need to get as result current date and time (in datetime format) minus <code>X</code> seconds.</p>
  
  <h2>Example</h2>
  
  <p>If <code>X</code> is 65 and current date is <code>2014-06-03 15:45:00</code>, then I need to get the result <code>2014-06-03 15:43:45</code>.</p>
  
  <h2>Environment</h2>
  
  <p>I'm doing this on Python 3.3.3 and I know I could probably use the <code>datetime</code> module but I haven't had any success so far.</p>