code: def test_pandas_deserializer_csv(pandas_deserializer):
      stream = io.BytesIO(b"col 1,col 2\na,b\nc,d")
      result = pandas_deserializer.deserialize(stream, "text/csv")
      expected = pd.DataFrame(
          [["a", "b"], ["c", "d"]], columns=["col 1", "col 2"]
      )
      assert result.equals(expected)
  
imports: from __future__ import absolute_import
  import io
  import json
  import numpy
  import pandas
  import pytest
  from sagemaker.deserializers import StringDeserializer, BytesDeserializer, CSVDeserializer, StreamDeserializer, NumpyDeserializer, JSONDeserializer, PandasDeserializer, JSONLinesDeserializer
label_desc: Use image node_id 26 for calling a global function with example usage: test_pandas_deserializer_csv(pandas_deserializer) without return types