title: How to split the list on the pairwise elements?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/312443/how-do-you-split-a-list-into-evenly-sized-chunks-in-python">How do you split a list into evenly sized chunks in Python?</a>  </p>
  </blockquote>
  
  
  
  <p>Let us have a list, there is always an even number of elements. We must break it down by pairing.
  Example:
  list['1','2','3','4']
  need
  1,2 and 3,4</p>