code: def test_read_csv(s3_base, s3so, pdf, bytes_per_thread):
      # Write to buffer
      fname = "test_csv_reader.csv"
      bucket = "csv"
      buffer = pdf.to_csv(index=False)
  
      # Use fsspec file object
      with s3_context(
          s3_base=s3_base, bucket=bucket, files={fname: buffer}
      ):
          got = cudf.read_csv(
              f"s3://{bucket}/{fname}",
              storage_options=s3so,
              bytes_per_thread=bytes_per_thread,
              use_python_file_object=False,
          )
      assert_eq(pdf, got)
  
      # Use Arrow PythonFile object
      with s3_context(
          s3_base=s3_base, bucket=bucket, files={fname: buffer}
      ):
          got = cudf.read_csv(
              f"s3://{bucket}/{fname}",
              storage_options=s3so,
              use_python_file_object=True,
          )
      assert_eq(pdf, got)
  
imports: import os
  import socket
  from contextlib import contextmanager
  from io import BytesIO
  import numpy
  import pandas
  import pyarrow.fs
  import pytest
  from fsspec.core import get_fs_token_paths
  import cudf
  from cudf.testing._utils import assert_eq
label_desc: Use image node_id 9 for calling a global function with example usage: test_read_csv(s3_base, s3so, pdf, bytes_per_thread) without return types