code: def compute_backend_df(request):
      try:
          mod = pytest.importorskip(request.param)
      except ImportError:
          raise ValueError(f"Could not import {request.param}")
  
      np.random.seed(22)
      return mod.DataFrame(
          {
              "a": np.random.normal(2, 1.2, size=250),
              "b": np.random.normal(3, 1.5, size=250),
              "c": np.random.normal(9, 0.2, size=250),
              "d": np.random.choice(["x", "y"], size=250),
              "e": np.random.choice(
                  ["v", "w"], p=[0.01, 0.99], size=250
              ),
              "z": np.zeros(250),
          }
      )
  
file_path: data-describe/tests/conftest.py
imports: import pytest
  import pandas
  import numpy
label_desc: Use image node_id 9 for calling a global function with example usage: compute_backend_df(request) and returns: mod