code: def string_storage(request):
      """
      Parametrized fixture for pd.options.mode.string_storage.
  
      * 'python'
      * 'pyarrow'
      """
      return request.param
  
imports: import shlex
  import subprocess
  import time
  import uuid
  import pytest
  from pandas.compat import is_ci_environment, is_platform_arm, is_platform_mac, is_platform_windows
  import pandas.util._test_decorators
  import pandas.io.common
  from pandas.io.parsers import read_csv
label_desc: Use image node_id 16 for calling a global function with example usage: string_storage(request) and returns: request