title: adding numbers in a column in python
body: <p>I have a list of numbers in a column like </p>
  
  <pre><code>10,12,13
  </code></pre>
  
  <p>I wanted to write a python program which can add these numbers in the following way: <code>10+12=22, 10+13=23, 12+13=25</code>
  Can anybody give any suggestion how to do it.
  Thanks</p>