code: def test_direct_read_dictionary():
      # ARROW-3325
      repeats = 10
      nunique = 5
  
      data = [
          [util.rands(10) for i in range(nunique)] * repeats,
      ]
      table = pa.table(data, names=["f0"])
  
      bio = pa.BufferOutputStream()
      pq.write_table(table, bio)
      contents = bio.getvalue()
  
      result = pq.read_table(
          pa.BufferReader(contents), read_dictionary=["f0"]
      )
  
      # Compute dictionary-encoded subfield
      expected = pa.table([table[0].dictionary_encode()], names=["f0"])
      assert result.equals(expected)
  
imports: import decimal
  import io
  import numpy
  import pytest
  import pyarrow
  from pyarrow.tests import util
  from pyarrow.tests.parquet.common import _check_roundtrip
label_desc: Use image node_id 4 for calling a global function with example usage: test_direct_read_dictionary() without return types