code: def _merge(*list_pairs):
      a = []
      b = []
      for al, bl in list_pairs:
          a += al
          b += bl
      return a, b
  
file_path: insightface/parsing/dml_csr/utils/miou.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import argparse
  import cv2
  import json
  import numpy
  import os
  from collections import OrderedDict
  from PIL import Image
  from utils.transforms import transform_parsing
label_desc: Use image node_id 5 for calling a global function with example usage: _merge() and returns: a,  b