code: def test_get_item_vector():
      f = 10
      i = AnnoyIndex(f, "euclidean")
      i.add_item(0, [random.gauss(0, 1) for x in range(f)])
      for j in range(100):
          print(j, "...")
          for k in range(1000 * 1000):
              i.get_item_vector(0)
  
imports: import pytest
  import random
  from annoy import AnnoyIndex
label_desc: Use image node_id 1 for calling a global function with example usage: test_get_item_vector() without return types