def _is_cmyk(filename):
    """Determine if file contains a CMYK JPEG format image.

  Args:
    filename: string, path of the image file.

  Returns:
    boolean indicating if the image is a JPEG encoded with CMYK color space.
  """
    blacklist = ['n01739381_1309.JPEG', 'n02077923_14822.JPEG',
        'n02447366_23489.JPEG', 'n02492035_15739.JPEG',
        'n02747177_10752.JPEG', 'n03018349_4028.JPEG',
        'n03062245_4620.JPEG', 'n03347037_9675.JPEG',
        'n03467068_12171.JPEG', 'n03529860_11437.JPEG',
        'n03544143_17228.JPEG', 'n03633091_5218.JPEG',
        'n03710637_5125.JPEG', 'n03961711_5286.JPEG', 'n04033995_2932.JPEG',
        'n04258138_17003.JPEG', 'n04264628_27969.JPEG',
        'n04336792_7448.JPEG', 'n04371774_5854.JPEG', 'n04596742_4225.JPEG',
        'n07583066_647.JPEG', 'n13037406_4650.JPEG']
    return filename.split('/')[-1] in blacklist
