code: def test_fail_array_dimension_2():
      pca = PCA(n_components=2)
      assert_raises(
          ValueError,
          "X must be a 2D array. Try X[:, numpy.newaxis]",
          pca.transform,
          X_std[1],
      )
  
file_path: mlxtend/mlxtend/feature_extraction/tests/test_principal_component_analysis.py
imports: import numpy
  from numpy.testing import assert_allclose, assert_almost_equal
  from mlxtend.data import iris_data
  from mlxtend.feature_extraction import PrincipalComponentAnalysis
  from mlxtend.preprocessing import standardize
  from mlxtend.utils import assert_raises
label_desc: Use image node_id 9 for calling a global function with example usage: test_fail_array_dimension_2() without return types