title: How to convert number to time in python?
body: <p>I need convert number to time.</p>
  
  <p>For example: </p>
  
  <p>I need to convert <code>1230</code> to <code>12:30</code> or <code>0730</code> to <code>07:30</code>.</p>
  
  <p>How to convert a number to time in python?</p>