code: def round(self, decimals=0, *args, **kwargs):
          
          nv.validate_round(args, kwargs)
  
          if is_integer(decimals):
              result = np.apply_along_axis(np.round, 0, self.values)
              return self._wrap_result(result, axis=0)
          raise TypeError("decimals must be an integer")
docs: Round each value in Panel to a specified number of decimal places.
  
          .. versionadded:: 0.18.0
  
          Parameters
          ----------
          decimals : int
              Number of decimal places to round to (default: 0).
              If decimals is negative, it specifies the number of
              positions to the left of the decimal point.
  
          Returns
          -------
          Panel object
  
          See Also
          --------
          numpy.around