code: def memory_usage(self, deep=False):
          
          return self._codes.nbytes + self.dtype.categories.memory_usage(
              deep=deep)
docs: Memory usage of my values
  
          Parameters
          ----------
          deep : bool
              Introspect the data deeply, interrogate
              `object` dtypes for system-level memory consumption
  
          Returns
          -------
          bytes used
  
          Notes
          -----
          Memory usage does not include memory consumed by elements that
          are not components of the array if deep=False
  
          See Also
          --------
          numpy.ndarray.nbytes