code: def generate_vectors(nb, dim):
      return [[random.random() for _ in range(dim)] for _ in range(nb)]
  
imports: import os
  import logging
  import numpy
  import sklearn.preprocessing
  import h5py
  import random
  from itertools import product
  from pymilvus import DataType
  from milvus_benchmark import config
label_desc: Use image node_id 3 for calling a global function with example usage: generate_vectors(nb, dim) and returns: unknown