code: def test_parameter_not_modified():
      """Tests the original dataframe is not modified"""
      original = copy.deepcopy(data)
      lpi(data, space)
  
      pd.testing.assert_frame_equal(data, original)
  
file_path: orion/tests/unittests/analysis/test_lpi.py
imports: import copy
  import numpy
  import pandas
  from orion.analysis.base import to_numpy, train_regressor
  from orion.analysis.lpi_utils import compute_variances, lpi, make_grid
  from orion.core.io.space_builder import SpaceBuilder
label_desc: Use image node_id 2 for calling a global function with example usage: test_parameter_not_modified() without return types