code: def buffer(request):
      return request.param
  
file_path: pandas/pandas/tests/io/parser/test_compression.py
imports: import os
  from pathlib import Path
  import tarfile
  import zipfile
  import pytest
  from pandas import DataFrame
  import pandas._testing
label_desc: Use image node_id 1 for calling a global function with example usage: buffer(request) and returns: request