code: def _make_date_time_index(size, time_unit):
      return pd.date_range("2000-01-01", periods=size, freq=time_unit)
  
imports: from datetime import datetime
  import numpy
  import pandas
  import pyarrow
  from pytest import fixture
  from random import random, randint, choice
  from faker import Faker
label_desc: Use image node_id 1 for calling a global function with example usage: _make_date_time_index(size, time_unit) and returns: pd