title: How to append a value to an option in config file using Python
body: <p>I have config file as below:</p>
  
  <pre><code>[SECTION]
  email = user1@exmple.com, user2@example.com
  </code></pre>
  
  <p>Now i want to append some more email ids in email using <code>python</code>, which should like as given below:</p>
  
  <pre><code>email = user1@exmple.com, user2@example.com, user3@example.com, user4@example.com
  </code></pre>
  
  <p>Please let me know how to do that.</p>