code: def mode(self, dropna=True):
          
  
          import pandas._libs.hashtable as htable
          codes = self._codes
          if dropna:
              good = self._codes != -1
              codes = self._codes[good]
          codes = sorted(htable.mode_int64(ensure_int64(codes), dropna))
          return self._constructor(values=codes, dtype=self.dtype, fastpath=True)
docs: Returns the mode(s) of the Categorical.
  
          Always returns `Categorical` even if only one value.
  
          Parameters
          ----------
          dropna : bool, default True
              Don't consider counts of NaN/NaT.
  
              .. versionadded:: 0.24.0
  
          Returns
          -------
          modes : `Categorical` (sorted)