code: def main(args):
      include_datasets = args.include.split(",")
      rec_list = []
      for ds in include_datasets:
          path_imgrec = os.path.join(ds, "train.rec")
          path_imgidx = os.path.join(ds, "train.idx")
          imgrec = mx.recordio.MXIndexedRecordIO(
              path_imgidx, path_imgrec, "r"
          )  # pylint: disable=redefined-variable-type
          rec_list.append(imgrec)
      if not os.path.exists(args.output):
          os.makedirs(args.output)
  
      #
      imgid = 0
      for ds_id in range(len(rec_list)):
          imgrec = rec_list[ds_id]
          s = imgrec.read_idx(0)
          header, _ = mx.recordio.unpack(s)
          assert header.flag > 0
          seq_identity = range(
              int(header.label[0]), int(header.label[1])
          )
  
          for identity in seq_identity:
              s = imgrec.read_idx(identity)
              header, _ = mx.recordio.unpack(s)
              for _idx in range(
                  int(header.label[0]), int(header.label[1])
              ):
                  s = imgrec.read_idx(_idx)
                  _header, _img = mx.recordio.unpack(s)
                  label = int(_header.label[0])
                  class_path = os.path.join(
                      args.output, "id_%d" % label
                  )
                  if not os.path.exists(class_path):
                      os.makedirs(class_path)
  
                  image_path = os.path.join(
                      class_path, "%d_%d.jpg" % (label, imgid)
                  )
                  with open(image_path, "wb") as ff:
                      ff.write(_img)
  
                  imgid += 1
                  if imgid % 10000 == 0:
                      print(imgid)
  
file_path: insightface/recognition/partial_fc/unpack_glint360k.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import argparse
  import os
  import cv2
  import mxnet
label_desc: Use image node_id 1 for calling a global function with example usage: main(args) without return types