code: def test_missing_getitem():
      """
      We should get a helpful error message if our vector doesn't have a
      __getitem__ method.
      """
  
      class FakeCollection:
          def __len__(self):
              return 5
  
      i = AnnoyIndex(5, "euclidean")
      with pytest.raises(TypeError) as excinfo:
          i.add_item(1, FakeCollection())
      assert (
          str(excinfo.value)
          == "'FakeCollection' object is not subscriptable"
      )
  
file_path: annoy/test/types_test.py
imports: import random
  import numpy
  import pytest
  from annoy import AnnoyIndex
label_desc: Use image node_id 6 for calling a global function with example usage: test_missing_getitem() and returns: int