title: Convert spreadsheet number to column letter
body: <p>I'm looking for the opposite to this Q&amp;A: <a href="https://stackoverflow.com/questions/7261936/convert-an-excel-or-spreadsheet-column-letter-to-its-number-in-pythonic-fashion">Convert an excel or spreadsheet column letter to its number in Pythonic fashion</a>.</p>
  
  <p>or this one but in python <a href="https://stackoverflow.com/questions/181596/how-to-convert-a-column-number-eg-127-into-an-excel-column-eg-aa">How to convert a column number (eg. 127) into an excel column (eg. AA)</a></p>