title: Python: How to code empty filedsin csv file as numerically ascending
body: <p>I have a csv file and a dictionary like this:</p>
  
  <pre><code>myData={'ID':'','Name':'','Age':''}   
  </code></pre>
  
  <p>I can read and write my Values from the csv file into <code>myData</code></p>
  
  <p>I would like to have the column ID numerically ascending.</p>
  
  <pre><code>'ID' 'Name'
  1 Maria
  2 Jones
  3 Jack
  </code></pre>
  
  <p>How can i do this?
  Thank you in advance</p>