code: def do_options(self, labels, values):
          
          return [dict(label=l, value=v) for l, v in zip(labels, values)]
docs: Replace the drop down fields.
  
          Parameters
          ----------
          labels : array-like
              List of strings which will be visible to the user.
          values : array-like
              List of values associated with the labels that are hidden from the user.
  
          Returns
          -------
          None