code: def test_load_unload():
      # Issue #108
      i = AnnoyIndex(10, "angular")
      for x in range(100000):
          i.load("test/test.tree")
          i.unload()
  
imports: import os
  import random
  import pytest
  from annoy import AnnoyIndex
label_desc: Use image node_id 3 for calling a global function with example usage: test_load_unload() without return types