code: def tz(request):
      return request.param
  
file_path: cudf/python/cudf/cudf/tests/series/test_datetimelike.py
imports: import os
  import pandas
  import pytest
  import cudf
  from cudf import date_range
  from cudf.testing._utils import assert_eq
label_desc: Use image node_id 3 for calling a global function with example usage: tz(request) and returns: request