title: How to add VBA code to multiple files programmatically?
body: <p>I have many excel files (approx 200) in which I have to add VBA code (in the <code>Workbook_Open()</code> method).<br>
  I would like to automate that, is there a way to add VBA code to an excel sheet programmatically?  </p>
  
  <p>Maybe with python's <code>win32</code> package?</p>