code: def _ycbcr2rgb(self, mode):
          
  
          self._check_modes(("YCbCr", "YCbCrA"))
  
          (self.channels[0], self.channels[1], self.channels[2]) = \
              ycbcr2rgb(self.channels[0],
                        self.channels[1],
                        self.channels[2])
  
          if self.fill_value is not None:
              self.fill_value[0:3] = ycbcr2rgb(self.fill_value[0],
                                               self.fill_value[1],
                                               self.fill_value[2])
  
          self.mode = mode
docs: Convert the image from YCbCr mode to RGB.