code: def test_hashing():
      # ARROW-640
      values = list(range(500))
      arr = pa.array(values + values)
      set_from_array = set(arr)
      assert isinstance(set_from_array, set)
      assert len(set_from_array) == 500
  
imports: import datetime
  import decimal
  import pytest
  import sys
  import weakref
  import numpy
  import pyarrow
  import pyarrow.compute
  from pyarrow.tests import util
label_desc: Use image node_id 5 for calling a global function with example usage: test_hashing() without return types