code: def gen_binary_vectors(nb, dim):
      # binary: each int presents 8 dimension
      # so if binary vector dimension is 16，use [x, y], which x and y could be any int between 0 and 255
      vectors = [
          [random.randint(0, 255) for _ in range(dim)]
          for _ in range(nb)
      ]
      return vectors
  
imports: import copy
  import json
  import os
  import time
  import numpy
  import pandas
  import random
  from faker import Faker
  from sklearn import preprocessing
  from common.common_func import gen_unique_str
  from common.minio_comm import copy_files_to_minio
  from utils.util_log import test_log
label_desc: Use image node_id 5 for calling a global function with example usage: gen_binary_vectors(nb, dim) and returns: vectors