code: def _get_avg_saturation(self, image):
      hsv = cv2.cvtColor(image, cv2.COLOR_RGB2HSV)
      return np.average(hsv[..., 1])
  
imports: from __future__ import print_function, division, absolute_import
  import sys
  import numpy
  import cv2
  import imgaug
  from imgaug import augmenters
  from imgaug import random
  from imgaug.testutils import reseed, runtest_pickleable_uint8_img
  import imgaug.augmenters.color
  import imgaug.augmenters.artistic
label_desc: Use image node_id 1 for calling the Test__saturate obj's underlying member method code with example usage: obj._get_avg_saturation(image) and returns: np