code: def mode(self):
          
          m = ''
          if self.indexed:
              m = 'P'
          elif self.bits_per_component == 1:
              m = '1'
          elif self.bits_per_component == 8:
              if self.colorspace == '/DeviceRGB':
                  m = 'RGB'
              elif self.colorspace == '/DeviceGray':
                  m = 'L'
              elif self.colorspace == '/DeviceCMYK':
                  m = 'CMYK'
          if m == '':
              raise NotImplementedError("Not sure how to handle PDF image of this type")
          return m
docs: ``PIL.Image.mode`` equivalent for this image